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K-Ingredients
Basics
K-Sunscreen
Labels
Combining
Skin Types
Tools
한국어
Ingredient Basics
Retinol, vitamin C, acids, niacinamide. The actives you meet in any label, Korean or not.
Niacinamide: what Korea's 2 to 5 percent rule tells you
Retinol in Korean products: 2,500 IU and what it means
Vitamin C in Korean products: which forms Korea recognizes
AHA, BHA and PHA: which acid does what
Hyaluronic acid: how to actually use it
Ceramides and the skin barrier, without the marketing
Peptides and copper peptides: what the labels are telling you
Azelaic and tranexamic acid: the tone ingredients that are not on Korea's list
Panthenol, allantoin and squalane: the quiet regulars
Arbutin and adenosine: Korea's other listed actives
Preservatives: why every water-based product needs one
Alcohol in skincare: which one is on your label
Silicones, thickeners and why texture is not a gimmick
Ingredient basics: the map