Occlusives are a key component of many skincare routines, particularly for individuals with dry or dehydrated skin. By forming a protective barrier, occlusive products help to prevent trans-epidermal water loss (TEWL) and maintain the skin's natural moisture levels. This can be especially beneficial in harsh weather conditions or environments with low humidity. While occlusives are effective in locking in moisture, they can feel heavy or greasy on the skin, which may not be suitable for everyone or for daytime use. As part of a nighttime skincare routine, occlusives can provide intense hydration and support the skin's natural barrier function.