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Cosrx The Vitamin C 23 Serum is a high-strength vitamin C serum built around 23% ascorbic acid, backed by vitamin E, hyaluronic acid, squalane and caffeine. It targets dullness, dark spots, post-acne marks and early fine lines, and the pipette bottle makes dosing easy. The 23% concentration is strong for a mass-market serum, so it sits closer to professional-strength formulas than to gentle starter serums. Reviewers often note the light, fast-absorbing liquid and a visible glow, but many flag the tingling on first use and the need to build up slowly.
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Lowest price we've seen: $25.00 on Nov 12 at Revolve. Tracked across 1 store since Nov 12.
Reviewers generally rate it for brightening and fading marks, with many calling it effective for the concentration. The most common complaints are tingling on application and the serum turning darker before the bottle is finished.
Cosrx The Vitamin C 23 Serum is a liquid day serum that comes in a pipette bottle. It contains vitamin C along with hyaluronic acid, squalene, niacinamide, vitamin E, caffeine and other antioxidants.
It is made for wrinkles, hyperpigmentation and scars, and is intended to be used with the rest of your skincare routine. The formula is mineral oil-free and paraben-free.
