As a scientist formulator and advocate for evidence-based beauty, I choose products based on formulation, ingredient function, and most importantly barrier support. These are three over-the-counter products I consistently reach for because the science makes sense. @dermalogica exfoliating cleanser because it supports cell turnover without disrupting the barrier @cerave vitamin C + ceramide serum because on antioxidant support, barrier integrity , and hydration @larocheposayusa barrier-repair moisturizer that reinforces the skin’s natural lipid balance and works to repair the skin barrier even overnight. Simple routines work best when the formulas are doing what they are supposed to do. If you want more beauty education rooted in formulation and skin science, let me know what category to break down next.