The Vitamin C 13 Serum, 0.67 oz.

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Product details

Web ID: 17631853

A gentle vitamin C serum that's perfect for sensitive skin. It works tirelessly to fade blemishes, dark spots and freckles while enhancing overall tone with consistent use.

  • Product Features

    • WHAT IT IS:
    • A gentle vitamin C serum for those who want to use vitamin C every day, targeting uneven skin tone, dark spots, pigmentation and freckles, fine lines and wrinkles plus rough skin texture
    • WHAT IT DOES:
    • Provides daily brightening care; fades blemishes, dark spots and freckles; improves overall tone; refines skin texture; reduces size of pores
    • INGREDIENT HIGHLIGHTS:
    • 13% pure vitamin C improves discoloration and uneven skin tone
    • Tocotrienol (super vitamin E) boasts up to 50 times greater anti-oxidizing efficacy than tocopherol
    • Hyaluronic acid and allantoin provide moisture and relieve irritation
    • HOW TO USE:
    • Cleanse your skin and use a toner, then apply a few drops of serum to the skin
    • Use fingertips to gently massage and absorb the serum, starting from the middle of the face and working toward the edges

  • Shipping & Returns

    • This item qualifies for Free Shipping with minimum purchase! exclusions & details
    • Our Normal Gift Boxing is not available for this item.
    • 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
  • This vitamin C serum is widely praised for its ability to brighten skin, reduce dark spots and hyperpigmentation, and improve overall skin tone and texture.
  • Many users report it is lightweight, absorbs quickly, and is gentle on sensitive skin.
  • While a few experienced minor dryness or breakouts, the majority of reviews are very positive, with users seeing visible results in a short time and expressing interest in trying higher concentrations from the brand.
AI-generated summary from 111 customers reviews.
4.8/5

112 star ratings, 111 reviews

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12
5
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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.

14 customer images

111 reviewssorted by Newest

Janet F.
17 days ago
Incentivized review

My Go To Vitamin C

Another COSRX product that I can't live without. It's the only Vit C I use and will continue to purchase. I did try the Vit C 23 but I definitely like how this one works on my aging skin better.

Customer review from cosrx

Brittany
30 days ago

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

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

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

Item smelled so bad

I really was looking forward to using this product but it smelled so bad I couldn’t put it on my face. Unfortunately I forgot to return it in the appropriate window so it is just sitting here. Not sure if that smell is normal.

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

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

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

Lisa V.
1 month ago
Incentivized review

So far so good! This

So far so good! This feels really light and smooth on my face. Hoping for a great results.

Customer review from cosrx

Bridgette K.
2 months ago
Incentivized review

This serum is fantastic -

This serum is fantastic - it leaves my overall skin tone even and full looking. I am very happy with it.

Customer review from cosrx

Mackenzie G.
2 months ago
Incentivized review

This is so soft and

This is so soft and even on the skin. Does feel a bit sticky towards the end of application but if you let it dry into the skin that goes away. The scent is different, I won’t lie, but doesn’t linger post application. I have noticed lightening in my melasma since starting CosRx products, but I am using multiple products, so most likely from the combination of all. Great size bottle for the price. It is only 13% pure vitamin C, but it is helping with brightness.

Customer review from cosrx

Dana M.
2 months ago
Incentivized review

I like the consistency of

I like the consistency of it. It does have a smell that is not very pleasant. So far, I like the way it's working.

Customer review from cosrx

patty c.
3 months ago
Incentivized review

i love the mild version

i love the mild version so i use them when i travel. it doesn’t give the heavy greasy feel g and complexion is brighter.

Customer review from cosrx

Dana B.
3 months ago
Incentivized review

It’s good! I was nervous

It’s good! I was nervous trying but pairing it with the skin peptide has made a difference in my skin! I do deal with hormonal acne and I have combination skin!

Customer review from cosrx