Why does city skin always look tired?

Find out in 60 seconds - starting with the air around you right now.

Locating… Live
Reading the air around you…
Your Skin Stress Index
Skin stress score
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Your stress breakdown
What's happening to your skin

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Skin context
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Sun sensitivity
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Why this routine

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The science behind your score +

Environmental - PM2.5 and pollution particles generate oxidative stress in skin cells, accelerating collagen and elastin breakdown (Nature Scientific Reports; JAAD reviews on pollution and skin).

Psychological - Chronic stress raises local cortisol, weakening the skin barrier and increasing water loss - measurable as elevated TEWL (Nature Scientific Reports, 2018).

Lifestyle - Sleep loss shortens the overnight window when skin repairs and rebuilds its barrier.

Educational and directional, not a medical diagnosis.

Get your full report & a custom routine

We'll email a step-by-step routine built for your score, from hello@prothesis.co.