COSRX The Vitamin C 23 Serum

Marsoni

M251S

$98.99

Get it in 3 business days with 1 day shipping. Friday, May 29

COSRX The Vitamin C 23 SerumKey Benefits This serum contains 23% pure vitamin C (ascorbic acid), making it a powerful antioxidant treatment for brightening and anti aging. Its ideal for those with dull skin, uneven tone, or early signs of aging. Brightens Skin Tone: Fades dark spots, acne scars, and hyperpigmentation Reduces Fine Lines & Wrinkles: Stimulates collagen production for firmer skin Improves Elasticity: With super vitamin E (tocotrienol), which has 50x more

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I’ve been getting into more natural skincare lately, especially beef tallow products, so I wanted to try a sunscreen like this. I like that it uses tallow along with zinc oxide for protection. The texture is smooth and not overly greasy, and it blends in better than I expected for a mineral sunscreen. It leaves my skin feeling moisturized. I’ve used it on both my face and body, and it feels comfortable throughout the day. It’s also been good with my daughter’s skin, even though she has skin problems, which has been a big plus for us.

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Reviewed in the United States on April 15, 2026

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Jessica

Waukegan, US

★★★★★ 5

Works well!

Size: 3 Ounce (Pack of 1)

Awesome sunscreen! Protected against sunburn, and felt clean on my skin.

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Reviewed in the United States on May 19, 2026

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