The Vitamin C 23 Serum

$25.00
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$10 Star Money for $100
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Product details

Web ID: 16842543

Hypoallergenic 23% pure vitamin C!

  • Product Features

    • WHAT IT IS:
    • An antioxidant brightening booster with high performance
    • WHAT IT DOES:
    • Fades acne scars and hyperpigmentation; brightens dull skin; firms and plumps; diminishes fine lines and wrinkles; targets dull skin, uneven skin tone, dark spots and hyperpigmentation
    • INGREDIENT HIGHLIGHTS:
    • 23% pure vitamin C (ascorbic acid) is an antioxidant that brightens (improves blemishes and brighten skin), reduces wrinkles and enhances elasticity
    • Super vitamin E (tocotrienol), which features 50 times higher antioxidant activities than tocopherol, stimulates collagen production
    • Hyaluronic acid has strong moisture-retention properties to help maintain hydration
    • Allantoin helps soothe and relieve irritation
    • HOW TO USE:
    • After cleansing, during the serum phase, shake the bottle lightly once or twice from side to side, then apply a few drops to the skin; use fingertips to gently massage and absorb the serum, starting from the inside of the face working toward the edges
    • This serum can be used in the morning and/or afternoon; if applied in the morning, be sure to use with an SPF of 30 or higher
    • For the first use, attach the enclosed dropper in the product package
    • Use within 2 months of opening, due to active ingredient protection
    • Store upright in refrigerator once opened
    • RESULTS:
    • In 4 weeks:
    • 16.26% improvement of pigmentation (visible melasma and blemishes)*
    • 32.89% improvement of triple-complexion skin tone (red skin tone)*
    • 32.36% effect of brightening (skin radiance)*
    • 16.36% improvement of elasticity (internal elasticity)*
    • 38.65% improvement of the pore (volume)*
    • 27.18% improvement of the pore (count)*
    • *Based on clinical trials of 20 subjects; Dermacosmetic Skin Science Laboratory Co., Ltd.

  • Shipping & Returns

    • This item qualifies for Free Shipping with minimum purchase! exclusions & details
    • California and Minnesota customers call 1-800-289-6229 for Free Shipping information.
    • For complete details, see our Shipping and Returns policies.

Ratings & Reviews

Here's what customers think
  • The serum is described as lightweight, hydrating, and absorbing quickly into the skin.
  • Many reviewers noted that it helped brighten their skin, fade dark spots and hyperpigmentation, and improve the overall appearance and texture of their skin.
  • However, a common complaint is the strong, unpleasant smell that many found off-putting, though some mentioned the smell dissipates quickly.
  • Some users also found the serum to be a bit sticky or tacky upon application.
  • A few sensitive-skinned customers reported experiencing irritation or breakouts from using the serum.
AI-generated summary from 3,626 customers reviews.
4.1/5

3,634 star ratings, 3,626 reviews

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On average, customers rate the Oil-absorbing/moisturizing of this item as Neutral.

On average, customers rate the Heavy/light of this item as Neutral.

On average, customers rate the Best for day/best for night of this item as Day or night.

491 customer images

3,626 reviewssorted by Newest

Migzy U.
16 days ago
Incentivized review

I love this Vitamin C.

I love this Vitamin C. My husband and I are using it since we got our first bottle in Seoul and we even recommended it to our families.

Customer review from cosrx

Ari N.
20 days ago
Incentivized review

So far it's been only

So far it's been only a few days. . got this for hyperpigmation. Will keep updating

Customer review from cosrx

Toni V.
1 month ago
Incentivized review

I refrigerate. So refreshing in

I refrigerate. So refreshing in morning. My skin feels so much better and brighter.

Customer review from cosrx

Cheryl K.
1 month ago
Incentivized review

The Vitamin C serum by

The Vitamin C serum by Cos-Rx is by far the best product with the most noticeable results that I have found. I love this product and this brand.

Customer review from cosrx

Craig D.
1 month ago
Incentivized review

Very smooth and absorbent when

Very smooth and absorbent when put on. No odor. I keep in refrigerator. Two month shelf life. Has made my skin look brighter. I place on before snail cream and peptide booster

Customer review from cosrx

Chikanele O.
2 months ago
Incentivized review

Even skin tone

I have noticed a different in my skin since using this product. I have noticed the brightening effects. My skin tone is more even with less dark spots. While I do not store the product in the fridge one it is opened, I store my unopened products in the fridge. I made the mistake of leaving an unopened one in a cabinet. It evaporated within 2 months.

Customer review from cosrx

Valerie M.
2 months ago
Incentivized review

COSRX Vitamin C23

I am 65 plus year old woman with sensitive skin. Vitamin C23 makes my skin brighter and looks smoother.

Customer review from cosrx

Terri T.
2 months ago
Incentivized review

Great product, skin glows

I have used other Serum Vitamin C brands, when I first put this in a little goes a long way. My skin felt refreshed and hydrated. I’ve noticed my dark spots are somewhat lighter. My granddaughters remarked on how my skin glows. Truly a great and worthwhile product that definitely won’t break the bank. l

Customer review from cosrx