Washing may weaken the skin barrier by activating enzymes that destroy lipid-processing enzymes
In organotypic skin and isolated stratum corneum, a longer pause at elevated pH after washing may weaken the barrier through enzyme destruction. A persistent effect of exposure order without enzyme loss would refute this mechanism.
Stage of verification
- Hypothesis published2026-09-25
- Indirect evidenceAssessed at 4 of 10
- Direct testAwaited
Map of the hypothesis
Hover over an icon or tap it to see its name.
Where in the body
Ageing mechanism
Kind of knowledge gap
A double ring marks the main placement where a group contains several values.
Target map
Every target of every published hypothesis, each with the actions a hypothesis can propose on it. The targets and the actions of this hypothesis are drawn solid.

Enzyme
Proteases
Enzymes that break down proteins
Where this hypothesis actsSerine proteases in the stratum corneum after washing, while pH remains elevated
Hypotheses on this target 7
Inhibition6
Activation
Lower level1
Higher level
Replacement
Protection from degradation
Cofactor removal
Synthesis suppression
Function preservation

What is proposed
Inhibition
Inhibit serine proteases immediately after washing
With whatSmall molecule
HowAdd a protease inhibitor before lipid-processing enzymes are cleaved; check that it does not alter friction, hydration or lipid organization
Possible result
Possible prevention of enzyme loss and reduced tolerance to subsequent friction
From the recordИнгибирование сериновых протеаз непосредственно после мытья должно предотвращать ухудшение

Enzyme
β-glucocerebrosidase
An enzyme involved in processing epidermal lipids
Where this hypothesis actsStratum corneum during the elevated-pH interval after washing and before friction
Hypotheses on this target 1
Inhibition
Activation
Lower level
Higher level
Replacement
Protection from degradation1
Cofactor removal
Synthesis suppression
Function preservation

What is proposed
Protection from degradation
Preserve the intact, active enzyme by preventing proteolytic cleavage
With whatNot stated in the record
HowInhibit serine proteases immediately after washing, before cleavage occurs
Possible result
Possible stabilization of SPV_1 and preservation of tolerance to subsequent friction
From the recordЭти ферменты расщепляют ферменты переработки эпидермальных липидов, включая β-глюкоцереброзидазу и кислую сфингомиелиназу.

Enzyme
Acid sphingomyelinase
An enzyme involved in processing epidermal lipids
Where this hypothesis actsStratum corneum during the elevated-pH interval after washing and before friction
Hypotheses on this target 1
Inhibition
Activation
Lower level
Higher level
Replacement
Protection from degradation1
Cofactor removal
Synthesis suppression
Function preservation

What is proposed
Protection from degradation
Preserve the intact, active enzyme by preventing proteolytic cleavage
With whatNot stated in the record
HowInhibit serine proteases immediately after washing, before cleavage occurs
Possible result
Possible stabilization of SPV_1 and preservation of tolerance to subsequent friction
From the recordЭти ферменты расщепляют ферменты переработки эпидермальных липидов, включая β-глюкоцереброзидазу и кислую сфингомиелиназу.
All targets of the lab
Every target read from the published hypotheses, each kind around its pictogram. A larger mark means more hypotheses act on that target. Point at a mark and the actions proposed on it branch out of it.
Solid and named: the targets of this hypothesis
Explore in depth
The logic
The train of thought that ends in this hypothesis. Each stage is the reason the next exists. The master question narrows to a goal, the goal to an unknown nobody has closed, the unknown to the hypothesis proposed here. Every step below says what it rests on and what carries it.
Skin’s ability to withstand washing and rubbing may depend on the interval between them, even when the total exposure stays the same. The unexpected move is that a pause could allow damage to continue: washing is proposed to trigger enzymes that destroy other enzymes needed to maintain the skin’s protective barrier. This is a hypothesis generated by the pipeline, not a measured result of the proposed washing-and-friction sequence.
- Washing is proposed to raise pH in the outermost skin layer temporarily.
- Elevated pH is proposed to activate protein-cutting enzymes.
- Those enzymes are proposed to cut and disable lipid-processing enzymes, including beta-glucocerebrosidase and acid sphingomyelinase, two enzymes that break down particular skin lipids.
- A longer pause at elevated pH is predicted to permit more enzyme destruction and weaken the barrier before friction begins.
- Returning pH to its starting value is proposed to stop further cutting while leaving the previously destroyed enzymes unavailable.
- Later friction is predicted to encounter a barrier whose resistance depends on the preceding reaction time, despite equal total washing and friction.
A workshop has a machine that dismantles its own maintenance tools while an unwanted switch stays on. Turning the switch off stops further destruction but does not put the tools back.
Where the picture breaks: Skin enzymes are not tools operated by a single switch. The picture does not establish that washing activates the proposed reaction, that restoring acidity stops it, or how quickly usable enzymes return.
- Master questionstep 01 of 04
The intended therapy would restore the functional condition of middle-aged human skin to that of young people.
Rests on: The supplied goal sets youthful skin function as the intended outcome; it does not establish that this outcome is achievable.
AssumptionThe goal assumes that youthful skin function can serve as a treatment target. The supplied material does not define the functions, comparison population, or success criteria.
- Goal pillarstep 02 of 04
Protection, healing, and the return to physical stress must be coordinated in time.
Rests on: The preceding goal seeks youthful skin function but does not explain why coordinating these periods is a necessary part of achieving it.
LeapThe missing connection is a stated basis linking the timing of protection, healing, and renewed stress to the restoration of youthful skin function.
- Gap questionstep 03 of 04
Equal total amounts of washing, drying, and friction might cause different damage when their order or spacing changes. The question is whether this defeats the Palmgren–Miner rule, a cumulative-damage model that adds contributions from separate exposures without accounting for their order.
Rests on: The preceding stage explicitly makes the timing of protection, recovery, and renewed stress part of the problem. Comparing different exposure schedules gives that timing question a concrete form.
Stated in the chain - Hypothesisstep 04 of 04
Washing is proposed to raise pH, the measure of acidity or alkalinity, in the stratum corneum, the outermost skin layer. This would activate serine proteases, protein-cutting enzymes, which would destroy enzymes that process lipids, the fats and related substances that help form the skin barrier. A pause at elevated pH could therefore leave skin less able to tolerate later friction, and restoring acidity would not immediately replace the destroyed enzymes.S4
Rests on: The preceding stage supplies the timing problem. Source S4, an abstract from The Journal of Investigative Dermatology in 2005, reports that prolonged chemical neutralization sustained protein-cutting activity, degraded lipid-processing enzymes, and disrupted barrier function; it does not establish the proposed sequence after washing, its duration, or its consequences for later friction.
Supported by literature
What is carried, and what is not. The supplied abstract of S4, published in The Journal of Investigative Dermatology in 2005, speaks to three central links: sustained elevated pH, increased protein-cutting activity, and loss of lipid-processing enzymes with barrier disruption; its treatment was prolonged chemical neutralization, not washing followed by a timed pause and friction. These links have partial literature support, but no supplied source establishes the entire proposed sequence or its relevance to restoring youthful function in middle-aged human skin.S4
Where the reasoning is carried by something unstated · 2
- Master question. The goal assumes that youthful skin function can serve as a treatment target. The supplied material does not define the functions, comparison population, or success criteria.
- Goal pillar. The missing connection is a stated basis linking the timing of protection, healing, and renewed stress to the restoration of youthful skin function. Establish the missing link before relying on this step.
How a result here could mislead · 3
- A decrease in lipid-processing enzyme activity could be mistaken for destruction of those enzymes. Activity alone does not establish that the proteins have been cut. What closes it: Measure activity alongside intact enzyme abundance and the appearance of enzyme fragments across the pause. The proposed measurements of enzyme preservation need to establish cutting specifically, with pH and water content matched before the final challenge.
- Protection from early enzyme blocking could be credited to preservation of lipid-processing enzymes even if blocking instead preserves other structures that hold the outer skin layer together. Source S2, an abstract from The Journal of Investigative Dermatology in 2003, reports breakdown of such connecting structures after chemically raising pH in hairless mice; it does not establish destruction of lipid-processing enzymes or the washing sequence proposed here.S2 What closes it: The specified checks on friction, water content, and lipid arrangement are necessary but do not separate these routes. Damage to the connecting structures must also be assessed, and protection must be linked specifically to preservation of the lipid-processing enzymes before this mechanism can be distinguished.
- Failure to reproduce the effect in an isolated outer skin layer could be read as evidence against the hypothesis even if isolation had removed the enzyme activity needed for the reaction. Likewise, failure of late blocking to restore resistance would be ambiguous if the blocker did not work. What closes it: Verify that the isolated layer retains the relevant enzyme activity and responds to elevated pH. Confirm that both early and late blocking suppress the protein-cutting activity, and establish that enzyme destruction has already occurred before the late treatment.
What would make this wrong. A reproducible effect of washing-and-friction order or spacing without loss or cutting of the lipid-processing enzymes would contradict the proposed explanation, provided the measurements can detect those changes during the relevant interval. The endpoint itself names this outcome as a rejection of its mechanism; it would not, by itself, establish either competing explanation.
What it would change. If the hypothesis held, restoring skin function would require accounting for chemical damage that can continue during a pause after washing; elapsed rest alone would not establish readiness for renewed friction. Work toward the master goal would need to distinguish preventing enzyme destruction from waiting for recovery after destruction. Success in the proposed laboratory skin models would still not establish a therapy that restores middle-aged human skin to youthful function, and the supplied material does not define the internal outcome label SPV_1.
Sources read · 8
Serine protease activity and residual LEKTI expression determine phenotype in Netherton syndrome. · The Journal of investigative dermatology · 2006
“The permeability barrier abnormality in NS was further linked to SC thinning and proteolysis of two lipid hydrolases (beta-glucocerebrosidase and acidic sphingomyelinase), with resultant disorganization of extracellular lamellar membranes.”
Does not settle: Источник описывает пациентов с синдромом Нетертона и избыточную активность сериновых протеаз. Он не устанавливает, что мытьё повышает pH рогового слоя, активирует эти протеазы, определяет длительность протеолиза до трения или что возвращение pH прекращает протеолиз без быстрого восстановления расщеплённых ферментов.
pH directly regulates epidermal permeability barrier homeostasis, and stratum corneum integrity/cohesion. · The Journal of investigative dermatology · 2003
“Both 1,1,3,3-tetramethylguanidine and 1,8-diazabicyclo [5,4,0] undec-7-ene applications increased skin surface pH in parallel with abnormalities in both barrier homeostasis and stratum corneum integrity/cohesion. The latter was attributable to rapid activation (<20 min) of serine proteases, assessed by in situ zymography, followed by serine-protease-mediated degradation of corneodesmosomes.”
Does not settle: Источник описывает обработку кожи бесшерстных мышей сверхоснованиями, а не мытьё. Он не сообщает, что сериновые протеазы расщепляют β-глюкоцереброзидазу или кислую сфингомиелиназу, не исследует восстановление pH после мытья, продолжительность протеолиза до трения, необратимость состава ферментов или SPV_1.
Functional consequences of a neutral pH in neonatal rat stratum corneum. · The Journal of investigative dermatology · 2004
“The delay in BR correlated with incompletely processed lamellar membranes and decreased activity of beta-glucocerebrosidase.”
Does not settle: Источник описывает новорождённых крыс с нейтральным pH рогового слоя, а не мытьё кожи. Он не устанавливает протеолитическое расщепление β-глюкоцереброзидазы или кислой сфингомиелиназы сериновыми протеазами, длительность эффекта после мытья, необратимость изменений либо влияние последующего трения.
Sustained serine proteases activity by prolonged increase in pH leads to degradation of lipid processing enzymes and profound alterations of barrier function and stratum corneum integrity. · The Journal of investigative dermatology · 2005
“These abnormalities were attributable to a decrease in beta-glucocerebrosidase (beta-GlcCer'ase) and acidic sphingomyelinase (aSMase) catalytic activity and enzyme degradation consequent to a pH-induced sustained serine protease (SP) activity.”
Does not settle: Источник изучает длительную нейтрализацию рогового слоя тетраметилгуанидином, а не мытьё и временное повышение pH. Он не устанавливает, как долго сохраняется pH после мытья, прекращается ли протеолиз после возврата pH к исходному уровню, восстанавливаются ли уже расщеплённые ферменты и как порядок механической нагрузки влияет на барьер.
Cleansing without compromise: the impact of cleansers on the skin barrier and the technology of mild cleansing. · Dermatologic therapy · 2004
“The present authors' recent studies demonstrate that high pH (pH 10) solutions, even in the absence of surfactants, can increase stratum corneum (SC) swelling and alter lipid rigidity, thereby suggesting that cleansers with neutral or acidic pH, close to SC-normal pH 5.5, may be potentially less damaging to the skin.”
Does not settle: Источник не устанавливает временное повышение pH после мытья, активацию сериновых протеаз, расщепление β-глюкоцереброзидазы или кислой сфингомиелиназы, порядок воздействий, длительность протеолиза либо необратимое изменение состава активных ферментов.
Measuring and Modeling Contractile Drying in Human Stratum Corneum. · Journal of visualized experiments : JoVE · 2017
“Its contact with the external environment means that this tissue layer is subjected to both cleansing agents and daily variations in ambient moisture; both of which can alter the water content of the tissue.”
Does not settle: Источник не устанавливает влияние мытья на pH рогового слоя, активность сериновых протеаз, расщепление β-глюкоцереброзидазы или кислой сфингомиелиназы, длительность протеолиза, последовательность воздействий и состояние SPV_1.
Decrease of superficial serine and lactate in the stratum corneum due to repetitive frictional trauma. · International journal of dermatology · 2018
“Compared with the control, which was washed with soap at the same frequency on the opposite forearm, a significant increase in the transepidermal water loss (TEWL) and a decrease in NMF, serine, and total lactate, responsible for maintenance the SC hydration and structuring and maintaining the epidermal barrier function, in the SC were found.”
Does not settle: Источник показывает изменения барьерных показателей после двух недель повторного мытья с трением у шести здоровых добровольцев. Он не устанавливает временное повышение pH, активацию сериновых протеаз, расщепление β-глюкоцереброзидазы или кислой сфингомиелиназы, необратимость этих изменений, эффект паузы после мытья либо последовательность воздействий.
Surfactants and the skin. · International journal of cosmetic science · 1998
“Changes in the physical properties of the skin occur after washing. For example, changes in skin surface pH and transepidermal water loss (a sensitive index of barrier function) are easily demonstrable.”
Does not settle: Открытыми остаются активация сериновых протеаз, расщепление β-глюкоцереброзидазы и кислой сфингомиелиназы, длительность изменений после мытья и влияние порядка мытья, паузы и трения на барьер.
The gap this hypothesis explains
Something is claimed here, but it rests on evidence too thin to carry weight.
At equal total exposure, do washing, drying and rubbing schedules change how much stress recovered skin tolerates before damage?
Original wording · exactly as the pipeline generated it
При одинаковой накопленной нагрузке меняют ли интервалы и порядок мытья, высушивания и трения порог повреждения настолько, что правило Пальмгрена–Майнера перестаёт описывать восстановленную кожу?
What this question is asking
The question asks whether skin that has recovered tolerates repeated washing, drying and rubbing according to their total amount or also their timing and order. It compares different gaps and sequences at the same total exposure, asking whether damage begins at different points. The proposed benchmark is the Palmgren–Miner rule, which adds damage contributions from repeated loads without accounting for their order or recovery between them. The question assumes that this kind of accounting is a meaningful starting point for skin, while the accompanying description asserts that clinically validated versions accounting for recovery and sequence are unavailable. Neither what counts as recovered skin nor how unlike exposures are combined into an equal total is specified.
- Recovered skin
- Skin described as having returned toward a prior or reference functional condition after damage or treatment. The input does not specify which functions must recover, so this term does not establish complete restoration of tolerance.
- Accumulated exposure or total load
- The combined amount of stress across repeated episodes. Combining washing, drying and rubbing into one comparable total requires a definition that the input does not provide.
- Damage threshold
- The point at which a specified measurement counts as damage. It depends on the measurement and criterion used; no such criterion is supplied here.
- Fatigue model and Palmgren–Miner rule
- A fatigue model describes damage accumulating through repeated stresses. The Palmgren–Miner rule adds the fractions of fatigue life consumed by different loads; its basic accounting does not include exposure order or biological repair, and its applicability to skin is not established here.
- Clinically validated curve
- A relationship between exposure and outcome checked against measurements in people. The supplied sources do not establish whether curves incorporating skin recovery and exposure order exist.
- Skin-surface pH
- A measure of how acidic or alkaline the skin surface is. Its recovery after washing is the measurement reported in S1, rather than a direct measurement of restored resistance to damage.
- Skin barrier function
- The skin's ability to limit water loss and the passage of outside substances. It includes several protective functions, so recovery of one measurement need not establish recovery of all of them.
- Corneocytes
- Cells in the skin's outermost protective layer. S3 reports their release during detergent exposure and mechanical stimulation without establishing the damage threshold asked about.
- Detergent, disinfectant and irritation
- A detergent is a cleaning substance; a disinfectant is used to reduce microorganisms. Irritation is an adverse skin response, and the irritation comparison in S5 is not identified as the same outcome as the proposed damage threshold.
- Mechanical stimulation and friction force
- Mechanical stimulation means physical action on skin, such as rubbing. Friction force is the resistance encountered as surfaces move against each other; measuring that resistance does not by itself measure skin damage.
- Reference range and residual change
- A reference range is the interval used to judge a measurement as having returned to an expected condition. A residual change is a disturbance remaining after an exposure; the input supplies no numerical bounds for either.
- Persistently damaged state
- The possibility, raised by the pipeline, that skin remains functionally impaired instead of returning to its reference condition. The supplied sources do not establish such a transition in the setting asked about.
Fatigue models link skin damage to repeated loading cycles, but clinically validated curves accounting for recovery and exposure order are unavailable.
A fatigue model describes damage that accumulates through repeated stresses, such as successive washing or rubbing episodes. The premise treats that approach as relevant to recovered skin and asserts that a version tested against measurements in people, including recovery and sequence, is missing. If established, this would make the question a test of a specific model's limits.
The supplied search results do not establish either the applicability of fatigue accounting to recovered skin or the claimed absence of clinically validated curves. S1 reports recovery of surface acidity, and S7 explicitly distinguishes a dead-skin model from living skin with repair mechanisms. Neither tests the Palmgren–Miner rule; none of the supplied sources establishes the broader claim about what models exist. This bounded set of results does not show that the premise is false.S1S7
The same question asked without the part nothing read establishes:
- At equal total exposure, do different intervals or orders of washing, drying and rubbing change the damage threshold of skin whose measured functions have recovered?
- Does total exposure alone describe when repeated washing, drying and rubbing damage skin, or does accounting for timing and order change that description?
- Timing and order change the threshold Under this outcome, equal total exposure would produce different damage thresholds depending on the schedule. A rule based only on adding exposure contributions would therefore miss a determinant of tolerance, although the result alone would not distinguish ongoing repair from a lasting change in tissue condition.
- Timing and order leave the threshold unchanged Under this outcome, rearranging equal exposures would not change when damage begins within the conditions examined. Total-exposure accounting would remain compatible with that result, but the result would not by itself validate the particular Palmgren–Miner rule.
- Schedule effects depend on recovery Under this outcome, timing or order would matter while earlier changes persisted but cease to matter after recovery. Tolerance would then depend on both accumulated exposure and the condition of the skin when the next episode began, making the definition of recovery consequential.
Washing can change surface acidity, prolonged water exposure can impair the skin's protective function, and detergents and mechanical stimulation can release surface cells, as reported in S1, S2 and S3. S1 also reports that surface acidity takes time to return, so an exposure can leave a change that persists after it ends. If that remaining change affects the response to the next exposure, adding exposure amounts alone could misrepresent when damage begins; this is a conditional inference, not a finding established by these sources. Conversely, if timing and order do not change the damage threshold, attributing different tolerance to recovery intervals would misidentify what controls the outcome. The distinction concerns whether returning one measurement to its usual range also means that skin can withstand the next series of exposures.
Модели усталости, RL-1, связывают повреждение с циклами нагрузки; клинически проверенных кривых с учётом восстановления и порядка воздействий нет.
Между бытовыми эпизодами остаточные нарушения остаются в установленной полосе; после серии нагрузок функции возвращаются в референтный диапазон за допустимое время.
Неизвестно, определяется ли граница переносимости суммой нагрузок, скоростью репарации или переключением ткани в устойчивое повреждённое состояние.
The mechanism it proposes
The engine's own statement of the hypothesis, in full.
Мытьё временно повышает кислотно-основной показатель pH рогового слоя и активирует сериновые протеазы. Эти ферменты расщепляют ферменты переработки эпидермальных липидов, включая β-глюкоцереброзидазу и кислую сфингомиелиназу. Поэтому пауза после мытья при сохраняющемся повышенном pH может увеличивать скрытое нарушение барьера ещё до трения. Последующее возвращение pH к исходному значению останавливает дальнейший протеолиз, но уже расщеплённые ферменты сразу не восстанавливает. Порядок воздействий определяет продолжительность каталитической реакции до механической нагрузки. Состояние хранится в необратимо изменённом составе активных ферментов; предотвращение их расщепления стабилизирует SPV_1.
Testing and possible results
The prediction that would tell it apart
A hypothesis that predicts what its rivals predict is not worth running an experiment over. This is the observation on which this one differs.
При одинаковых дозах мытья и трения увеличение паузы с повышенным pH должно снижать последующую переносимость одновременно с потерей активности и появлением фрагментов липидоперерабатывающих ферментов. Эффект должен воспроизводиться в изолированном роговом слое с сохранённой ферментативной активностью. Ингибирование сериновых протеаз непосредственно после мытья должно предотвращать ухудшение; то же вмешательство после завершившегося расщепления не должно немедленно возвращать исходную устойчивость. Гидратацию и pH перед итоговым испытанием выравнивают. Отсутствие потери ферментов при сохраняющемся эффекте последовательности опровергает эту гипотезу в пользу клеточных механизмов.
States a measurable outcome; comparing rivals needs more conditions. The prediction specifies observable changes, timing-dependent intervention outcomes, and an explicit rejection condition. No rival prediction is supplied. Only a bench experiment would settle it.
What testing it would take
The engine's own read on whether this is testable with methods that already exist.
Можно использовать парные образцы органотипической кожи и изолированного рогового слоя, измеряя активность протеаз, сохранность ферментов и проницаемость. Раннее и позднее добавление ингибитора отделяет предотвращение реакции от восстановления после неё. Следует проверить, что ингибитор сам не меняет трение, гидратацию и липидную организацию образца.
Other explanations
Every other hypothesis the engine wrote for the same gap, and the observation that would separate the two.
При одинаковых дозах мытья и трения увеличение паузы с повышенным pH должно снижать последующую переносимость одновременно с потерей активности и появлением фрагментов липидоперерабатывающих ферментов. Эффект должен воспроизводиться в изолированном роговом слое с сохранённой ферментативной активностью. Ингибирование сериновых протеаз непосредственно после мытья должно предотвращать ухудшение; то же вмешательство после завершившегося расщепления не должно немедленно возвращать исходную устойчивость. Гидратацию и pH перед итоговым испытанием выравнивают. Отсутствие потери ферментов при сохраняющемся эффекте последовательности опровергает эту гипотезу в пользу клеточных механизмов.
- Rival 01 of 02What would separate them
Membrane microinjury may renew repair activity that sustains restored skin’s mechanical resilience predicts: В восстановленных органотипических образцах сравнить одинаковые наборы мытья, высушивания и трения с перестановкой слабого предварительного воздействия и основного испытания. После выравнивания гидратации, кислотности, внутриклеточного кальция и исходной проницаемости мембран предварительное воздействие должно повышать порог повторного повреждения в ограниченном временном окне. Более долгая пауза должна устранять защиту. Избирательное подавление индуцируемого усиления репарации при сохранённом исходном заделывании мембран должно устранять преимущество предварительной нагрузки. Критический результат: воспроизведение механического и кальциевого сигнала без микроповреждения мембран не заменяет предварительную нагрузку. Если толерантность только возрастает с отдыхом либо полностью определяется текущим кальциевым состоянием, гипотеза уступает Opposing calcium flows may slow skin recovery by spending energy without restoring ion balance.
- Rival 02 of 02What would separate them
Opposing calcium flows may slow skin recovery by spending energy without restoring ion balance predicts: При неизменной концентрации АТФ неблагоприятная последовательность должна увеличивать расход энергии на единицу восстановленного кальциевого распределения. Удлинение паузы после прекращения внешнего воздействия должно улучшать переносимость до достижения плато. После экспериментального выравнивания кальциевого состояния и кинетики его восстановления различие между последовательностями должно исчезнуть, даже если одна из них включала предварительные микроповреждения мембран. Если история нагрузки сохраняет защитный эффект после такого выравнивания, преимущество получает Membrane microinjury may renew repair activity that sustains restored skin’s mechanical resilience. Если ухудшение продолжается в изолированном роговом слое и устраняется подавлением поверхностных протеаз, преимущество получает this hypothesis.
What stands behind it
Which of the figures above have a study behind them, which are the engine's own, and what it would take to refute the hypothesis. This audit never judges the idea.
This hypothesis states no figure and cites no study, so there is nothing here to trace.
What it would take to refute it. Nothing already retrieved carries the prediction’s terms and it names no measurement this layer can route to a public dataset, so the bench is the residual — not a finding against it.
0 citation handles extracted; 1 Europe PMC search run; 0 records examined; 0 sources stored for enrichment, 0 with full text. A citation that did not resolve is a bibliographic failure, not proof that no such paper exists, and no hypothesis is blocked by this audit.