Issue link: https://www.ascpskindeepdigital.com/i/1545716
36 ASCP Skin Deep Summer 2026 Elevated hydration levels can lead to overhydration of corneocytes, causing swelling and a disruption in the cohesion of the stratum corneum. This can compromise barrier function over time, making the skin more susceptible to mechanical stress and microbial imbalance. High humidity also infl uences sebaceous gland activity and sweat production, often contributing to a more occlusive skin environment. This can lead to increased follicular occlusion, making conditions such as acne more prevalent. The combination of sebum, sweat, and environmental humidity creates an ideal environment for the proliferation of microorganisms, including Cutibacterium acnes and Malassezia species. Additionally, high humidity can alter the skin microbiome, shifting the balance toward organisms that thrive in moist environments. This may exacerbate infl ammatory skin conditions, including acne, seborrheic dermatitis, and certain forms of folliculitis. Treatment Considerations in High Humidity In high-humidity environments, the focus shifts to balancing hydration without overloading the skin, managing sebum, and supporting microbiome health. Lightweight, noncomedogenic moisturizers and gel-based formulations are preferred to prevent occlusion. SKIN PHYSIOLOGY Cleansers should remain gentle but eff ective in removing excess oil and sweat without stripping the skin barrier. Exfoliation can be slightly more active, incorporating salicylic acid or combination exfoliants to address congestion and follicular buildup. Incorporating antioxidants, niacinamide, and anti-infl ammatory ingredients helps regulate oil production and reduce infl ammation. ADAPTIVE ENVIRONMENTAL RESPONSES Environmental changes, particularly shifts in humidity, directly impact skin function and should be refl ected in both professional treatments and home care recommendations. Understanding these patterns allows estheticians to adjust protocols, modalities, and product selection with precision, ensuring treatments remain eff ective. By educating clients and adapting their home care accordingly, professionals can better support long- term skin health and optimize outcomes across all environmental conditions. GETTY IMAGES