ProtoClinical k-beauty dark bottle with light beige packaging on a clean white background.
COSRX

COSRX Refresh AHA/BHA Vitamin C Booster Serum 30ml

$20.32
["[\"Visibly brightens skin tone and fades uneven patches\",\"Delivers deep, lasting hydration that keeps skin plump throughout the day\",\"Gently dissolves dead surface cells for renewed radiance\",\"Refreshes and revives tired, stressed skin\"]"]
Refreshing Daily Skin Boosting Serum Daily peeling serum extracted from juicy Kiwi and Dragon Fruit Skin to care for dead skin cells and enhance the overall skin tone. Watery and Absorbant Texture Hydrating and soft serum instantly absorbs with a light finish, suitable for combination to oily skin...
For oily skin dealing with excess oil: COSRX's serum with Niacinamide works from within to deliver visibly brightens skin tone and fades uneven patches, not just temporary comfort.
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Sourced direct · batch code

["[\"Korean Beauty Formulation\",\"Suitable for Daily Use\"]"]
["[\"Niacinamide 2%\",\"Vitamin C\"]"]
COSRX Refresh AHA/BHA Vitamin C Booster Serum 30ml
COSRX Refresh AHA/BHA Vitamin C Booster Serum 30ml Default Title
$20.32
Clinically proven actives Dermatologist tested 100% authentic Korean Cruelty-free
Pairs beautifully with

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["[\"Niacinamide 2%\",\"Vitamin C\"]"]

Niacinamide works at the junction between melanocytes and keratinocytes, intercepting melanin transfer before pigment reaches the visible surface. It simultaneously boosts ceramide synthesis to strengthen the lipid barrier, which is why consistent use addresses both discoloration and dehydration. In this serum, Niacinamide targets excess oil, delivering visibly brightens skin tone and fades uneven patches with consistent use.

["[\"Niacinamide 2%
intercepts melanin transfer to fade spots and refine pore texture from within\",\"Vitamin C: neutralizes free radicals and inhibits melanin production for brighter, more protected skin\"]"]
Texture

Lightweight, absorbing serum

["[\"Oily Skin\"]"] ["[\"Excess Oil\"]"]
Hover the swatch: it ripples like water

How to use

1

After cleansing and toning, apply a small amount to the face.

2

Avoid the immediate eye area.

3

Follow with moisturizer.

4

Start a few times weekly and increase as tolerated.

5

Use sunscreen during daytime use.

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Ingredients

Niacinamide intercepts melanin transfer to fade spots and refine pore texture from within, while Vitamin C neutralizes free radicals and inhibits melanin production for brighter, more protected skin, creating a formula that addresses multiple needs at once.

Niacinamide works at the junction between melanocytes and keratinocytes, intercepting melanin transfer before pigment reaches the visible surface. It simultaneously boosts ceramide synthesis to strengthen the lipid barrier, which is why consistent use addresses both discoloration and dehydration. At concentrations above 4%, it also regulates sebum output without stripping, making it one of the few actives that benefits every skin type.

The detail

Specs & details

FormatLightweight serum
SizeDefault Title
Skin typesOily Skin
Country of originSouth Korea
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Questions & answers

After cleansing and toning, before moisturizer. Serums deliver actives most effectively on freshly prepped skin.\",\"Q: Can I layer this with other serums?
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About the brand

OriginSeoul, KR
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