COSRX
The Vitamin C 13 Serum
The Vitamin C 13 Serum
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Vitamin C serums can be temperamental—unstable, irritating, or just plain weak. COSRX's version actually works without the drama. It's a stable 13% L-ascorbic acid formula that brightens dull tropical skin and tackles early fine lines, without the redness that usually comes with vitamin C. If your skin gets angry easily, this one's gentle enough to handle.
Why You'll Love It
- Stabilized vitamin C that actually stays potent (no brown discoloration nonsense)
- Brightens in weeks—cuts through the dullness humidity traps in your skin
- Hydrating, not drying—it won't leave your face feeling tight or irritated
- Works well with sensitive skin types, even if you're using actives like niacinamide
Key Ingredients
L-Ascorbic Acid (13%) — The gold standard form of vitamin C. It brightens, boosts collagen, and protects against environmental stress. 13% is the sweet spot: strong enough to work, gentle enough for daily use.
Ferulic Acid & Vitamin E — Stabilizers that keep the vitamin C from oxidizing and multiplies its antioxidant power.
How to Use
After cleansing, apply a few drops to damp skin. Wait 10–15 minutes to let it absorb. Follow with your regular hydrating toner or essence. This is your Treat step. Use once daily (morning is best) to avoid overloading sensitive skin.
Shipping
Shipping
Singapore — SGD 5 flat rate. Free over SGD 80.
Malaysia — MYR 15 flat rate. Free over MYR 150.
Rest of SEA — SGD 12 flat rate. Free over SGD 120.
Orders ship in 1–2 business days. You'll get a tracking number by email.
Authenticity
Authenticity
Every product is sourced from authorized Korean distributors. Original packaging. Verifiable batch codes. If it's on our shelf, it's real.
Returns
Returns
Unopened products can be returned within 14 days. Damaged or defective? Email us within 48 hours with photos — we'll replace it or refund you. No hassle.
hello@colavo.com
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