ProtoClinical k-beauty Cos De BAHA VA Vitamin C 15% Serum 30ml dark amber serum bottle with matching box side by side on a white background
ProtoClinical k-beauty Cos De BAHA VA Vitamin C 15% Serum 30ml dark amber serum bottle with matching box side by side on a white background
ProtoClinical k-beauty Cos De BAHA VA Vitamin C 15% Serum 30ml single upright amber serum bottle centered on a white background with pale blue and peach accents
ProtoClinical k-beauty Cos De BAHA VA Vitamin C 15% Serum 30ml single upright amber serum bottle centered on a clean white background
Cos De BAHA

Cos De BAHA VA Vitamin C 15% Serum 30ml

$13.10
Boosts a brighter glow Helps fade dark spots Improves dull-looking tone Supports smoother texture Adds antioxidant care
Vitamin C is touted as one of the best anti-aging ingredients on the market — and the key to maintaining a smooth, even, and glowy complexion. Vitamin C has an excellent safety profile. Most people can use topical vitamin C for an extended period of time without experiencing...
A straightforward vitamin C treatment for skin that wants more glow and less visible discoloration.
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15% Vitamin C Glow-Boosting Serum Tone-Evening Care
vitamin C 15%
Cos De BAHA VA Vitamin C 15% Serum 30ml
Cos De BAHA VA Vitamin C 15% Serum 30ml Default Title
$13.10
Clinically proven actives Dermatologist tested 100% authentic Korean Cruelty-free
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$13.10

vitamin C 15%

Vitamin C (L-ascorbic acid) donates electrons to neutralize free radicals before they can damage collagen fibers and DNA. In this serum, Vitamin C targets sensitivity and redness, delivering restores skin's natural bounce and elasticity with consistent use.

Vitamin C 15%
neutralizes free radicals and inhibits melanin production for brighter, more protected skin
The texture

Lightweight, absorbing serum

Vitamin C is touted as one of the best anti-aging ingredients on the market — and the key to maintaining a smooth, even, and glowy complexion. Vitamin C has an excellent safety profile. Most people can use topical vitamin C for an extended period of time without experiencing any adverse reactions.

  • help fade pigmentation
  • helps fade hyperpigmentation
  • impede melanin production
  • reducing overall redness
  • tied to skin elasticity
  • protects against sun damage
All Skin Types dark spots dullness uneven tone rough texture
Hover the swatch: it ripples like water

How to use

1

After toner, apply 2 to 3 drops over the face.

2

Pat gently into the skin until absorbed.

3

Focus on the areas that need the most care.

4

Follow with moisturizer.

5

Use morning and night.

Full transparency

Ingredients

vitamin C 15% support visible glow and a more even surface.

This formula is best understood as a gradual brightening product, not a harsh corrective treatment. Ingredients such as vitamin C 15% are commonly used in cosmetic skincare to help reduce the look of discoloration, dullness, and uneven tone while keeping the skin more comfortable for repeated use. That balance matters because tone-correcting routines work better when the barrier stays supported and the skin does not feel overworked. In a light serum or toner format, the actives layer easily into morning or evening use without overwhelming the routine. The most credible benefit is progressive improvement: skin looks clearer, more even, and more luminous with steady use and daytime sun protection when needed. The texture and delivery format are part of why the formula makes practical sense in a daily routine, because products like this work best when they are comfortable enough to use consistently and easy to layer with moisturizer, sunscreen, or makeup as needed. That consistent, low-friction use is what makes the visible results more believable over time.

The detail

Specs & details

FormatLightweight serum
SizeDefault Title
Skin typesAll Skin Types
Country of originSouth Korea
Before you add to cart

Questions & answers

After cleansing and toning, before moisturizer. Serums deliver actives most effectively on freshly prepped skin.
Yes. Apply from thinnest to thickest consistency and allow each layer to absorb before the next.
Most users notice initial improvement within 2 to 4 weeks. For full benefits like restores skin's natural bounce and elasticity, allow 6 to 8 weeks of consistent use.
Your skin begins adjusting. You may notice improved hydration and comfort before more visible changes like texture refinement become apparent.
Yes, this formula is developed to be compatible with all skin types dealing with sensitivity and redness. If you have very reactive skin, patch test on the inner arm before full application.
The formula is designed to be well-tolerated. For pregnancy-specific concerns, consult your healthcare provider. For sensitive skin, patch test before full application.
Vitamin C neutralizes free radicals and inhibits melanin production for brighter, more protected skin. Consistent daily use is key to seeing the full benefits.
Check the INCI list for the most accurate information on fragrance components. The formula is developed for minimal irritation potential.
Store in a cool, dry place away from direct sunlight. Use within 12 months of opening for optimal freshness and efficacy.
Serums have a higher concentration of targeted actives than essences and a lighter consistency than most ampoules. They deliver the most potent treatment in your routine.
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About the brand

OriginSeoul, KR
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