Kiehls Tag

On the subject of skincare, we frequently get caught up in the newest TikTok trends and experimenting with trendy ingredients like witch hazel, forgetting that skincare is ultimately a science. Our skin's job is to guard us — it acts as a barrier to guard the body from external aggressors reminiscent of bacteria, pollution, and UV rays. But, as we routinely use products like harsh chemical exfoliants, we may inadvertently harm our skin barrier.The skin barrier is the outermost layer of the skin (also referred to as the epidermis) that guards against external stressors. When not properly protected "the skin barrier can begin to crack, which may leave the skin more vulnerable to free radical damage," Florida-based board-certified dermatologist Lesley Clark-LoeserMD, tells Allure....