Lia Choi Eun-ha 리아 최 은하 - Kore on Instagram: "the skincare ingredients that actually changed my patients' skin (backed by science, not marketing) 1- retinol at night. increases cell turnover, reduces fine lines, unclogs pores. start slow—twice a week, then build up. this is the gold standard for anti-aging 2- niacinamide in the morning. reduces inflammation, controls oil, fades hyperpigmentation. works for literally every skin type. 5-10% concentration is perfect 3- vitamin c serum after cleansing. brightens skin, evens tone, protects against radical damage. store it in a dark bottle away from light or it oxidizes and becomes useless most people buy products based on packaging. dermatologists prescribe based on active ingredients. know the difference. follow me + comment "lovi" and i'll send you the complete ingredient guide with percentages, layering order, and what to avoid mixing let's get your skin right"