Reviewing 4 Popular Brightening Korean Serum for Dark Spots

Creator rates Anua Niacinamide 10% + TXA 4% Dark Spot Correcting Serum 5/5 and calls it her current favourite for dry to combination skin: she finds it hydrating, soothing and brightening. She says it improved mouth-area pigmentation and red or brown acne marks in one to two months, but older dark spots may need four to six months and melasma needs a more potent product; oily skin may find it sticky in humidity.

Creator rates COSRX The Vitamin C 23 Serum 5/5 and says its 23% pure vitamin C formula did not irritate her with nightly use. She reports gradual fading of mouth pigmentation, brown acne marks, sun tan and unevenness, but says very old dark melasma may not respond. She requires refrigerated storage, discarding when oxidized, and advises sensitive or rosacea skin to avoid it.

Creator rates numbuzin No.5+ Vitamin Concentrated Serum 4.5/5, finding its pale-yellow cushiony texture hydrating without stickiness. She says daily use for one to two months fades red and brown acne marks and adds glow, while older stiff marks may take three to four months and melasma or old black marks may not respond.