Who is The Vitamin C 13 Serum for?

It suits normal, combination skin and is aimed at dark spots, dullness, uneven tone.

Where is The Vitamin C 13 Serum cheapest?

As of September 11, 2026, the lowest price we found was $16.80 at YesStyle, before code COZY26 (8% off orders over $79, up to 15% over $199).

Name: COSRX The Vitamin C 13 Serum
Brand: COSRX
SKU: ys-1137018507

★ 4.7 233 reviews on YesStyle

A vitamin C serum aimed at brightening skin tone and fading dark spots.

$16.80 ~~$21~~ −20% lowest at YesStyle, before code COZY26

Code COZY26 copies to your clipboard when you tap Buy. 8% off orders over $79, up to 15% over $199.

Prices checked Sep 11.

Lowest price first, coupon counted.

Retailer	Price	Code
YesStyleLowest	$16.80		Buy

Texture: Lightweight serum

What does COSRX The Vitamin C 13 Serum do?: A vitamin C serum aimed at brightening skin tone and fading dark spots.
Who is The Vitamin C 13 Serum for?: It suits normal, combination skin and is aimed at dark spots, dullness, uneven tone.
When do I use it?: Use it in the morning.
Where is The Vitamin C 13 Serum cheapest?: As of September 11, 2026, the lowest price we found was $16.80 at YesStyle, before code COZY26 (8% off orders over $79, up to 15% over $199).