Vitamin C
Vitamin C — in skincare
Vitamin C is an antioxidant that helps brighten dull skin and fade the look of dark spots. Pure L-ascorbic acid is the most studied form but also the least stable; derivatives such as ascorbyl glucoside and 3-O-ethyl ascorbic acid are gentler and keep longer.
What it does for skin
With regular use, vitamin C helps skin look more radiant and even and softens the look of post-blemish marks. In the morning, it adds antioxidant support under sunscreen.
Who it suits
Dull, uneven or tired-looking skin and skin with dark spots or post-blemish marks. Sensitive skin usually does better with derivatives than with high-strength pure vitamin C.
How to use it
Apply vitamin C after toner, ideally in the morning, then sunscreen. It pairs well with niacinamide and tranexamic acid; on sensitive skin, keep retinol and acids for the evening.
Korean products with it at Baseshop
At Baseshop, vitamin C mostly works as a brightening partner, not a high-strength solo active: SKIN1004 pairs it with niacinamide in an ampoule and a cleansing gel foam, Anua with niacinamide and tranexamic acid, and VT uses it in a spicule serum with astaxanthin. All are original Korean products, delivered within 24 hours in Yerevan.
Frequently asked
Vitamin C serum: morning or evening?
Morning is the classic choice, under sunscreen, but evening works too. Daily use matters most; if you also use retinol, keep vitamin C for the morning.
Is vitamin C serum good for oily skin?
Yes. Light ampoules with vitamin C derivatives and niacinamide suit oily and combination skin.
Why does vitamin C serum turn darker?
Pure vitamin C oxidizes with air, light and heat and loses strength as it turns yellow or brown. Derivatives are much more stable. Stop using a serum that has turned dark brown.
