ProtoClinical k-beauty Cos De BAHA LS Lactic Acid 12.5% Face Peel Serum with HA 30ml single upright rose-brown serum bottle centered on a pale pink and aqua background
ProtoClinical k-beauty Cos De BAHA LS Lactic Acid 12.5% Face Peel Serum with HA 30ml single upright rose-brown serum bottle centered on a pale pink and aqua background
ProtoClinical k-beauty Cos De BAHA LS Lactic Acid 12.5% Face Peel Serum with HA 30ml single serum bottle packshot centered on a clean light background in a square product shot
ProtoClinical k-beauty Cos De BAHA LS Lactic Acid 12.5% Face Peel Serum with HA 30ml single upright serum bottle in a square product shot on a clean light background
Cos De BAHA

Cos De BAHA LS Lactic Acid 12.5% Face Peel Serum with HA 30ml

$11.79
Sweeps away rough buildup Refines uneven texture Boosts overnight smoothness Brightens a dull surface Pairs exfoliation with comfort
High-strength lactic acid 12.5% AHA serum designed for night use to help refine the appearance of skin texture. Aloe-based formula with a light, watery-gel texture that spreads easily and absorbs quickly without a heavy finish. Includes propanediol, sodium citrate, arginine, and hydroxyethylcellulose to support comfortable application and formula...
A high-strength exfoliating serum for smoother texture and a clearer-looking glow by morning.
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12.5% Lactic Acid Overnight AHA Peel Experienced User Formula
lactic acid hyaluronic acid aloe vera
Cos De BAHA LS Lactic Acid 12.5% Face Peel Serum with HA 30ml
Cos De BAHA LS Lactic Acid 12.5% Face Peel Serum with HA 30ml Default Title
$11.79
Clinically proven actives Dermatologist tested 100% authentic Korean Cruelty-free
Pairs beautifully with

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lactic acid, hyaluronic acid, and aloe vera

Green tea's primary active compound, EGCG, is an antioxidant approximately 100 times more potent than vitamin C at neutralizing certain free radicals. In this serum, Green Tea Extract targets uneven texture, delivering gently dissolves dead surface cells for renewed radiance with consistent use.

Green Tea Extract
delivers epigallocatechin gallate (EGCG), one of the most potent natural antioxidants known
Aloe Vera
delivers instant soothing hydration with natural anti-inflammatory compounds
Lactic Acid 12.5%
exfoliates gently while simultaneously drawing moisture into the skin
The texture

Lightweight, absorbing serum

  • High-strength lactic acid 12.5% AHA serum designed for night use to help refine the appearance of skin texture.
  • Aloe-based formula with a light, watery-gel texture that spreads easily and absorbs quickly without a heavy finish.
  • Includes propanediol, sodium citrate, arginine, and hydroxyethylcellulose to support comfortable application and formula stability.
  • Enriched with botanical extracts such as green tea, elderflower, bitter melon, and edelweiss to complement daily skincare.
  • Suitable for experienced AHA users seeking a focused exfoliating serum step within a simple routine.
All Skin Types rough texture dullness uneven tone clogged pores
Hover the swatch: it ripples like water

How to use

1

Use at night after toner on dry skin.

2

Apply a thin layer over the face, avoiding the eye area.

3

Start 2-3 nights per week, then increase slowly.

4

Follow with moisturizer.

5

Wear sunscreen every morning.

Full transparency

Ingredients

Lactic acid and hyaluronic support focus on resurfacing rough texture while keeping the overnight peel step more comfortable.

This serum is a treatment-focused AHA step built around lactic acid at a relatively high percentage. Lactic acid works by loosening dead surface buildup, which can help rough texture, dullness, and a thickened skin feel look more refined with repeated use. Compared with some other acids, lactic acid is often chosen when users want resurfacing plus a slightly softer hydration feel. That is why pairing it with hyaluronic support makes sense: exfoliation is usually more tolerable when the routine still helps skin hold water. The lightweight texture also matters because it keeps the treatment step from feeling too heavy. This is best positioned as an experienced-user peel serum rather than a casual daily hydrator. Used carefully at night, it supports cleaner-looking texture, more even light reflection, and a smoother overall finish.

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 gently dissolves dead surface cells for renewed radiance, 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 uneven texture. 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.
Green Tea Extract delivers epigallocatechin gallate (EGCG), one of the most potent natural antioxidants known. 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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