The Vitamin C 23 Serum

4.1 (3,636)
$21.25 (15% off) with code: FRIEND$25.00

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
    • 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.

Ratings & Reviews

4.1/5

3,636 star ratings, 3,631 reviews

Write a Review
47.7% of reviews have 5 stars
1734
27.5% of reviews have 4 stars
999
14.8% of reviews have 3 stars
539
5.9% of reviews have 2 stars
214
4.1% of reviews have 1 star
150

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.

483 customer images

3,631 reviews
Rana H.
7 days ago
Incentivized review

visible brightness and smoother skin texture

I love the COSRX Vitamin C 23 Serum! It made my skin brighter and smoother in just a few weeks. It’s strong but gentle, and I can see my dark spots fading!

Customer review from cosrx

Eva E.
17 days ago
Incentivized review

My skin loves this product.

My skin loves this product. Light, easy to apply and wonderful results. My total skin care routine is ALL Cosrx

Customer review from cosrx

Marjorie S.
30 days ago
Incentivized review

This was the 1st product

This was the 1st product I tried from COSRX! So happy. As my skin ages, I’m super grateful to find such a high quality product that doesn’t break the bank! Love your samples too!

  • Photo from Marjorie S.

Customer review from cosrx

Luisana H.
2 months ago
Incentivized review

I have mixed feelings about

I have mixed feelings about this serum. I purchased it from an authorized retailer and noticed results almost immediately after using it. Aside from the pungent smell, I thought it was one of the best Vit C serum I’ve ever used. This time around I purchased it from directly from the manufacturer, and it feels like it has been reformulated, making it less effective than before. I will continue to use it until it runs out, but I’m not sure if I will purchase it again.

  • Photo from Luisana H.

Customer review from cosrx

Shyamu C.
2 months ago
Incentivized review

Undoubtedly it’s the best product

Undoubtedly it’s the best product for all skin types and also for the uneven skin tone. I’ve been using this product for quite sometime in combination with All in one snail serum, it’s usually helps me to get back my glow eventually . But the product is not delivered with care and so I’ve received a damaged package. Team needs to focus on delivering the product with uttermost care.

  • Photo from Shyamu C.
  • Photo from Shyamu C.
  • Photo from Shyamu C.

Customer review from cosrx

Hamid Z.
2 months ago
Incentivized review

shiny skin

great price, works great , have seen immediate results, skin feels and looks smoother

Customer review from cosrx

Sadia S.
2 months ago
Incentivized review

I have always used vitamin

I have always used vitamin c for almost 2 year s so I like this product

Customer review from cosrx

Vaishali H.
2 months ago
Incentivized review

Amazing product!!!! So far I’ve

Amazing product!!!! So far I’ve been impressed with all the Cosrx products I’m using.

Customer review from cosrx