11 Skincare Ingredients to Avoid in Indian Weather

9. Retinoids (retinol, tretinoin) are used carelessly in heat or without sun protection

Retinoids are powerful for acne and aging, but they can sensitize skin, causing dryness, peeling and temporary thinning of the outermost layer while your skin adjusts. In hot, humid weather, this sensitivity can feel worse: sun and sweat increase irritation and redness. If you plan to spend long hours outdoors or are travelling to sunny regions, use retinoids at night, start with a low concentration, and apply broad-spectrum sunscreen each morning. For short trips where sun exposure is expected, consider pausing strong retinoids and using gentler daytime actives like vitamin C and niacinamide that support tone and barrier function without the same irritation risk. Always check with a dermatologist before stopping prescription retinoids, but for over-the-counter retinol, consider spacing out use to minimize heat-related flares. [AAD: retinoids and acne].