The Vitamin C 23 Serum
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The Vitamin C 23 Serum

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The Vitamin C 23 Serum

Product Details

  • Hypoallergenic 23% pure vitamin C!

  • 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
    • Our Normal Gift Boxing is not available for this item.
    • Enjoy a longer window to return most of your holiday purchases. See our Extended Holiday Return Policy to see if this item qualifies.
    • California and Minnesota customers call 1-800-289-6229 for Free Shipping information.
    • For complete details, see our Shipping and Returns policies.
  • Web ID: 16842543
Formulation

Serum

Skin Concern

Anti Aging, Brightening, Uneven Skin Tone, Wrinkles

Ingredient Preference

Hyaluronic Acid, Vitamin C, Vitamin E

Ingredient Concern

Hypo-allergenic

Ratings & Reviews

Here's what customers think
  • Customers report brighter, more even-toned skin with a noticeable glow.
  • Reviewers observe a reduction in the appearance of dark spots, hyperpigmentation, and acne scars.
  • Many customers find the serum improves skin texture, making it feel smoother and softer.
  • Some customers with sensitive skin experienced irritation or breakouts, while others found it gentle.
  • Mixed feedback exists regarding the product's scent, with many describing it as unpleasant, though it often dissipates after application.
AI-generated summary from 3,629 customers reviews.
4.1/5

3,639 star ratings, 3,631 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

3,631 reviewssorted by Newest

Nancey C.
10 days ago
Incentivized review

I use the COSRX Line

I use the COSRX Line of skin care products exclusively and the Advanced Vitamin C 23 has been part of my AM skin routine for over two years now. I feel like it has really helped even my skin tone and it’s great for my décolleté area, especially during summertime when sun spots begin to appear. I have had none since I started using this product.

Customer review from cosrx

Christina R.
28 days ago
Incentivized review

Love this! Gentle on my

Love this! Gentle on my skin and a great price point

Customer review from cosrx

Evelyn D.
1 month ago
Incentivized review

It's the number one product

It's the number one product for my skincare routine. I love COSRX

Customer review from cosrx

Debora M.
1 month ago
Incentivized review

I honestly wish I had

I honestly wish I had taken a picture of my skin prior to using your product. But let me tell you there is such a difference and I’m ecstatic. They finally I have found something that’s gonna help. I have taken care of my skin, my whole life and within the last year, I have received horrible allergic reaction reactions that left scarring and this is devastating to me. A coworker shared your product and I had nothing to lose. I can’t tell you how I feel seeing my face almost being back to normal the same clear skin that I have taken care of for so many years all I can say is thank you

Customer review from cosrx

jacqueline h.
2 months ago
Incentivized review

Haven’t used yet but as

Haven’t used yet but as all Cosrx products I’m sure it s terrific

Customer review from cosrx

Migzy U.
3 months 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.
3 months 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.
4 months 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