Research & Science Behind SUI Wasser

Why Post-Exposure 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 your skin. The objective for SUI WASSER is to create mitigation solutions to help comfort stressed skin during the post-exposure period, and to help mitigate damage to DNA by reducing oxidative stress.

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 when you first come in out of cold environments or while swimming only to become enflamed, dry, tight, or irritated on the drive home, later in the evening, or before bed. By expediting care, immediately after exposure, you help reduce this delayed discomfort and support overall skin resilience and recovery.

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

We approach outdoor skincare as a system rather than a single product or intervention: protect where possible, mitigate the effects of repeated environmental exposure, support the skin barrier and its natural biological defenses, and provide meaningful post-exposure care.

Our focus on Skin Longevity grew from the belief that people who spend decades in the outdoors need more than an increasingly sophisticated sunscreen—they need a long-term strategy for supporting skin subjected to repeated sun, wind, cold, heat, dry air, altitude, salt, sweat, and other environmental stresses.

To learn more about the science behind SUI WASSER we’ve shared below links to several of the original research papers that influenced the development of SUI WASSER’s skincare system. Or, click here to view SUI WASSER’s skincare system and products.