ProtoClinical k-beauty Cos De BAHA L1 Bakuchiol 2% + Retinol 0.15% Serum 30ml single serum bottle centered upright on a plain white background
ProtoClinical k-beauty Cos De BAHA L1 Bakuchiol 2% + Retinol 0.15% Serum 30ml single serum bottle centered upright on a plain white background
ProtoClinical k-beauty Cos De BAHA L1 Bakuchiol 2% + Retinol 0.15% Serum 30ml single dark serum bottle with black cap and pale beige side accents on a white background
Cos De BAHA

Cos De BAHA L1 Bakuchiol 2% + Retinol 0.15% Serum 30ml

$15.72
Provides intensive moisture that sinks in without heaviness
Level 1 retinol with bakuchiol 2% and retinol 0.15% designed for a gentle introduction to retinol care in a nightly routine. Aloe-based formula with lactic acid, propanediol, sodium citrate, arginine, and hydroxyethylcellulose for a lightweight, fresh-feeling texture. Includes botanical extracts such as green tea, elderflower, bitter melon, and...
For all skin types dealing with uneven texture: Cos De BAHA's serum with Retinol works from within to deliver provides intensive moisture that sinks in without heaviness, not just temporary comfort.
100% authentic

Sourced direct · batch code

30-day returns

Unopened, no quibble

Korean Beauty Formulation Suitable for Daily Use
Retinol 0.15% Green Tea Extract Aloe Vera Lactic Acid
Cos De BAHA L1 Bakuchiol 2% + Retinol 0.15% Serum 30ml
Cos De BAHA L1 Bakuchiol 2% + Retinol 0.15% Serum 30ml Default Title
$15.72
Clinically proven actives Dermatologist tested 100% authentic Korean Cruelty-free
Pairs beautifully with

Complete the routine

Build your routine Tick products to add them with this one
$15.72

Retinol 0.15%, Green Tea Extract, Aloe Vera, and Lactic Acid

Retinol converts to retinoic acid inside the skin, where it binds to nuclear receptors that regulate gene expression for cell turnover and collagen production. In this serum, Retinol targets uneven texture, delivering provides intensive moisture that sinks in without heaviness with consistent use.

Retinol 0.15%
accelerates cell turnover and stimulates collagen synthesis for smoother, firmer skin
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
exfoliates gently while simultaneously drawing moisture into the skin
The texture

Lightweight, absorbing serum

  • Level 1 retinol with bakuchiol 2% and retinol 0.15% designed for a gentle introduction to retinol care in a nightly routine.
  • Aloe-based formula with lactic acid, propanediol, sodium citrate, arginine, and hydroxyethylcellulose for a lightweight, fresh-feeling texture.
  • Includes botanical extracts such as green tea, elderflower, bitter melon, and edelweiss to complement daily skincare.
  • Watery serum absorbs quickly and layers easily under moisturizer without leaving a heavy or greasy finish.
  • Ideal for beginners who want to start with a lower-strength retinol step and gradually build their routine.
All Skin Types Uneven Texture Dullness and Fatigue
Hover the swatch: it ripples like water

How to use

1

Step 1: After cleansing and toning, press 2 to 3 drops onto fingertips.

2

Step 2: Gently pat and press across forehead, cheeks, nose, and chin.

3

Step 3: Allow 30 seconds for full absorption before the next step.

4

Step 4: Follow with moisturizer. Use sunscreen in the morning.

Full transparency

Ingredients

Retinol accelerates cell turnover and stimulates collagen synthesis for smoother, Green Tea Extract delivers epigallocatechin gallate (EGCG), and Aloe Vera completes the formula as a delivers instant soothing hydration with natural anti-inflammatory compounds.

Retinol converts to retinoic acid inside the skin, where it binds to nuclear receptors that regulate gene expression for cell turnover and collagen production. Unlike prescription retinoids that work immediately (and irritate), retinol converts gradually, offering a sustained effect with less downtime. The compounding effect means texture, fine lines, and tone all improve progressively over 8 to 12 weeks.

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 provides intensive moisture that sinks in without heaviness, 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.
Retinol accelerates cell turnover and stimulates collagen synthesis for smoother, firmer 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.
You may also like

More clinical glow

Cos De BAHA
About the brand

OriginSeoul, KR
Shop all →