The Vitamin C 23 Serum

4.1 (3,651)
$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

3,651 star ratings, 3,643 reviews

Write a Review
47.9% of reviews have 5 stars
1748
27.4% of reviews have 4 stars
1000
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.

488 customer images

3,643 reviews
Alex D.
15 days ago
Incentivized review

I love this product! It

I love this product! It made my face feel incredibly smooth.

Customer review from cosrx

Kelsey R.
21 days ago
Incentivized review

great ingredients and seen some

great ingredients and seen some tests online that shows its effectiveness

Customer review from cosrx

Katie B.
21 days ago
Incentivized review

Love this serum so much!

Love this serum so much! I’ve been using it for a few months and have definitely seen improvements in my skin tone

Customer review from cosrx

Whitney W.
28 days ago
Incentivized review

It burned a little bit

It burned a little bit at first but that went away with a few uses. I use it at night and put Cosrx hyaluronic acid cream on top of it. my skin wakes up clearer with a more even skin tone. I’m very happy with this product.

Customer review from cosrx

Edwin S.
29 days ago
Incentivized review

I love it!! It's really

I love it!! It's really good and helps a lot

  • Photo from Edwin S.
  • Photo from Edwin S.

Customer review from cosrx

Amenze A.
29 days ago
Incentivized review

My before and after picture

My before and after picture are attached. 6 days in!!!

  • Photo from Amenze A.
  • Photo from Amenze A.

Customer review from cosrx

Nicole C.
1 month ago
Incentivized review

my skin looks so great.

my skin looks so great. the effect is amazing and it doesn’t feel too heavy on my skin.

  • Photo from Nicole C.

Customer review from cosrx

Shawna P.
1 month ago
Incentivized review

I decided to use Advanced

I decided to use Advanced The Vitamin C23 Serum every other day to go easy on my skin in case there was any sensitivity. (I already have and use a daily and nightly regimen of COSRX products) So, I have only used Advanced The Vitamin C23 Serum 4 times in 8 days,and WOW WOW WOW! It works beautifly, I have a dark brown 'age spot' on my cheek that came with the beauty of pregnancy, and I kid you not, this spot has almost completely faded away in just 4 applications! Also, my husband said to me last night, "I can tell the new stuff is really working, already, your skin (texture and glow) looks like a teenager's" So yes, it really really works and is very gentle on my skin, no irritation at all. In fact very calming and soothing on my skin with every other day use. I love this product! Perfect formula, please don't ever change it.

Customer review from cosrx