01
Visible radiance
Evens skin tone and brings back that K-Beauty glow from the first uses.
What it does for your skin
02
Even-toned
Progressively fades marks and evens out skin tone.
03
Daily protection
Strengthens the natural barrier and helps protect skin from external stressors.
How to use
01
Apply on clean, dry skin
02
Pat gently until fully absorbed
03
Continue with the rest of your routine
What's in it
Ingredients
- Pure Vitamin C
- Fades dark spots, brightens and protects from oxidative stress.
- 3-O-ethyl ascorbic acid
- Fades dark spots and evens skin tone. Non-photosensitizing, suitable for day and night.
- Niacinamide
- Evens skin tone and adds radiance.
- Hyaluronic acid
- Holds up to 1,000× its weight in water for plump, juicy skin.
- Panthenol
- Reinforces the product's main action in your routine.
- Extract of regaliz
- Nourishes and helps the skin defend itself from external stress, maintaining its natural balance.
FAQ
Everything you need to know before buying.
Still have questions? Write to us, we reply in English & Spanish.
Complete your routine
What's next?
Other essentials that pair with this product.
Verified reviews
4.8 out of 5
Based on 2,567 verified reviews
Showing a selection of verified reviews out of 2,567 total ratings.
5★
2,215
4★
272
3★
80
- M
María Cano
Verified purchase · 1 month ago
Clean formula, plenty of 3-O-ethyl ascorbic acid
I wanted something with 3-O-ethyl ascorbic acid and no twenty filler ingredients, and the The Vitamin C 13 delivers. It also has Pantenol, which my skin loves. On my second bottle already.
- E
Eva N.
Verified purchase · 6 weeks ago
Light texture, potent results
The The Vitamin C 13 is one of those that feels weightless but delivers. My skin was noticeably bouncier after a month.
- P
Pilar B.
Verified purchase · 6 days ago
Definitely reordering
The Vitamin C 13 is a fixture in my kit. COSRX clearly knows what they're doing.
- S
Sergio D.
Verified purchase · 2 weeks ago
Very good serum, needs a month
The Vitamin C 13 works, but be patient. Four weeks in and my skin is more even and bright. Not overnight magic.
- N
Nerea O.
Verified purchase · 4 weeks ago
Great serum, ease into it
The first days I used The Vitamin C 13 every other night to let my skin adjust. Now daily and my cheek texture is much finer.
- C
Cristina H.
Verified purchase · 2 days ago
Great value for the quality
The The Vitamin C 13 feels well-priced for the quality. My COSRX routine is really working.
- Í
Íngrid A.
Verified purchase · 1 week ago
Good but not for me
The The Vitamin C 13 didn't irritate me, but I didn't see the change I hoped for in a month. Might need longer, but I'll move on.