Supporting Research & Science Behind SUI Wasser…

Why Après Skin Care Matters

Outdoor exposure doesn’t end when you come inside.

Sun, wind, cold temperatures, and dry air place significant stress on skin — especially in alpine and high-exposure environments. While much attention is placed on protection during time outdoors, research shows that **the biological effects of environmental exposure continue well after exposure has ended.

Ultraviolet radiation initiates inflammatory responses in the skin that persist for hours or longer after sun exposure. At the same time, wind and cold dry air compromise the skin’s natural barrier, increasing moisture loss and leaving skin more vulnerable, tight, and uncomfortable. Together, these factors can continue to stress skin even after activity stops and layers come off.

After exposure, the skin is often:

  • Dehydrated due to increased transepidermal water loss

  • Experiencing ongoing inflammation and oxidative stress

  • Less effective at maintaining its natural barrier function

This post-exposure period is a critical window for skin comfort and recovery.

Après skin care is designed to support skin during this phase — after the sun, wind, and cold have already done their work.

By focusing on barrier support, moisture retention, and antioxidant replenishment, post-exposure care helps calm stressed skin and supports its natural recovery processes.

In alpine environments, where reflective surfaces, low humidity, and wind amplify exposure, this post-period becomes even more important. The skin may feel fine on the drive home, only to become dry, tight, or irritated later in the evening or before bed. By expediting care, after exposure, helps reduce this delayed discomfort and supports overall skin resilience and recovery.

Après skin care is not about blocking exposure—it’s about responding thoughtfully once exposure has occurred.

Inflammatory Responses to UV Exposure

● Inflammatory molecules associated with UV radiation (open access)

Link: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8069861/

Purpose: Overview of UV-induced inflammatory mediators — useful for a scientific rationale on post-exposure skin stress.

● Ultraviolet light-induced injury: immunological and inflammatory effects

Link: https://onlinelibrary.wiley.com/doi/10.1046/j.1440-1711.2001.01047.x

Purpose: Reviews how UV triggers inflammation that persists beyond exposure.

● Mediators of inflammation involved in UVB erythema

Link: https://www.sciencedirect.com/science/article/abs/pii/S0923181199000705?via%3Dihub

Purpose: Details the molecular mediators behind skin redness and ongoing inflammatory change after UVB.

Barrier Disruption + Transepidermal Water Loss (TEWL)

● Solar UV radiation reduces barrier function of skin (open access)

Link: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3479513/

Purpose: Shows how UV impairs stratum corneum cohesion and barrier properties — evidence for post-exposure dysfunction.

● Impact of Ultraviolet Radiation on Barrier Function (review)

Link: https://pubmed.ncbi.nlm.nih.gov/29110595/

Purpose: Summary of research showing how UV impacts the barrier and increases TEWL.

● UVB-Induced Alterations in Barrier Function (TEWL study)

Link: https://www.sciencedirect.com/science/article/abs/pii/S0022202X15530224

Purpose: Empirical study of UVB → barrier change → TEWL.

Moisturization and Barrier Repair Science

● The skin barrier and moisturization: function, disruption, and repair

Link: https://www.karger.com/Article/FullText/863006

Purpose: Overview of barrier/TEWL physiology and how moisturization supports skin recovery.

● Revitalizing the skin: role of barrier repair

Link: https://onlinelibrary.wiley.com/doi/10.1111/jocd.16171

Purpose: Dermatologic view on barrier repair cosmetics and mechanisms.

● Clinical study (moisture + barrier improvements)

Link: https://www.mdpi.com/2077-0383/12/18/6078

Purpose: Evidence of skin moisturization and barrier function improvements from topical formulations.

Antioxidants / Vitamin E + UV Effects

● Vitamin E in dermatology (open access)

Link: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4976416/

Purpose: Comprehensive review of tocopherol use and antioxidant effects in dermatologic settings.

● Topical tocopherol & UV radiation research

Link: https://www.sciencedirect.com/science/article/abs/pii/S0891584996003462

Purpose: Shows how UV reduces skin antioxidant stores and how topical antioxidants can mitigate this.

Link: https://www.jaad.org/article/S0190-9622(03)00781-3/abstract

Purpose: Demonstrates antioxidant combinations in resisting UV-induced oxidative change.