Description
Description
- Intensive spot care: 5% alpha-arbutin targets melanin at the source.
- Gentle brightening: Suitable for sensitive skin, no irritation or dryness.
- Barrier repair: 2% niacinamide strengthens the skin’s protective layer.
- Long-lasting hydration: Hyaluronic acid keeps skin moisturized while brightening.
- All skin types
- Made in :Korea
Ingredients
Ingredients
Base & Moisturizing Ingredients
Water (Aqua) (65-70%): Main solvent, provides a lightweight base for the serum.
Glycerin (8-10%): Plant-derived humectant, attracts moisture from the air and locks it into the skin.
Butylene Glycol (5-7%): Auxiliary moisturizer and solvent, enhances the serum’s stability and penetration.
Sodium Hyaluronate (1-2%): High-molecular-weight hyaluronic acid, forms a moisture-locking film on the skin surface.
Hydrolyzed Hyaluronic Acid (0.5-1%): Low-molecular-weight hyaluronic acid, penetrates deep into the skin to replenish moisture.
Core Brightening & Spot-Correcting Ingredients
Alpha-Arbutin (5%): Key brightening ingredient, inhibits tyrosinase activity, reduces melanin production, and fades dark spots.
Niacinamide (2%): Blocks melanin transfer, enhances brightening effect, and strengthens the skin barrier.
Adenosine (0.1-0.2%): Soothes irritated skin, reduces redness, and enhances the serum’s gentle properties.
Panthenol (0.5-1%): Vitamin B5, moisturizes and repairs the skin, relieving dryness caused by brightening ingredients.
Auxiliary Soothing & Protective Ingredients
Allantoin (0.3-0.5%): Calms sensitive skin, accelerates the repair of minor skin damage.
Betaine (1-1.5%): Natural humectant derived from sugar beets, relieves dryness and tightness.
Camellia Sinensis Leaf Extract (0.2-0.4%): Green tea extract, provides antioxidant protection, prevents free radical damage to the skin.
Glycyrrhiza Glabra (Licorice) Root Extract (0.1-0.3%): Licorice extract, soothes redness and irritation, enhances the serum’s gentleness.
Stabilizers & Preservatives 1,2-Hexanediol (2-3%): Auxiliary preservative and solvent, mild and non-irritating, suitable for sensitive skin.
Ethylhexylglycerin (0.3-0.5%): Enhances preservative efficacy, adds mild moisture to the skin.
Phenoxyethanol (0.4-0.6%): Mild preservative, compliant with KFDA safety standards, safe for sensitive skin.
Disodium EDTA (0.1-0.2%): Chelating agent, stabilizes the formula, prevents ingredient oxidation and discoloration.
Texture & pH Adjusting Ingredients
Xanthan Gum (0.1-0.2%): Thickener, adjusts the serum’s consistency to avoid runniness, without stickiness.
Citric Acid (0.05-0.1%): pH adjuster, balances the serum’s pH to 5.0-5.5 (matches the skin’s natural pH, avoiding irritation).
How to Use
How to Use
1. Prep Before Application
Gentle cleansing: Use a pH-balanced cleanser to wash the face (avoid over-cleansing, which weakens the skin barrier), then pat dry with a clean microfiber towel.
Tone the skin: Apply an alcohol-free, hydrating toner to balance the skin’s pH and open moisture channels—this maximizes the serum’s absorption.
2. Application Steps
Dispense the serum: Use the dropper to take 2-3 drops of the serum (adjust based on skin needs: 2 drops for daily brightening, 3 drops for targeted spot care) onto the palms.
Warm the serum: Rub your palms together gently for 2-3 seconds to warm the serum—this reduces potential irritation and enhances skin penetration.
Press into the skin: Press the serum onto the face with your palms in upward and outward motions, focusing on areas with hyperpigmentation (e.g., cheeks with sun spots, forehead with dullness). Avoid the eye and lip areas (these areas have thinner skin and may be more sensitive).
Wait for absorption: Let the serum absorb completely (about 30 seconds) before applying moisturizer or sunscreen—this prevents pilling and ensures the active ingredients work effectively.
3. Tips for Specific Concerns
For post-acne marks: Apply 1 extra drop directly to the mark (after cleansing and toning) and gently pat with fingertips—use twice daily (morning and night) until the mark fades.
For sun spots: Use in the morning and night, and pair with a broad-spectrum sunscreen (SPF 30+) during the day—UV rays can worsen pigmentation, so sunscreen is essential for maintaining brightening results.
For sensitive skin: Start with 1 drop every other night for the first 2 weeks (to build tolerance), then gradually increase to 2 drops daily if no irritation occurs.
General Precautions
Store in a cool, dark place away from direct sunlight: Sunlight degrades alpha-arbutin and reduces its brightening effect.
Clean the dropper after use: Wipe the dropper tip with a clean tissue to remove residual serum—prevents bacterial growth and cross-contamination.
Do not use on broken, peeling, or inflamed skin: The active ingredients may irritate damaged skin and worsen discomfort.
If redness, itching, or burning occurs, stop using immediately and consult a dermatologist.
COSRX The Alpha-Arbution 2 Discoloration Care Serum 50ml
COSRX The Alpha-Arbution 2 Discoloration Care Serum 50ml
Vendor: COSRX
Out of stock
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Description
Description
- Intensive spot care: 5% alpha-arbutin targets melanin at the source.
- Gentle brightening: Suitable for sensitive skin, no irritation or dryness.
- Barrier repair: 2% niacinamide strengthens the skin’s protective layer.
- Long-lasting hydration: Hyaluronic acid keeps skin moisturized while brightening.
- All skin types
- Made in :Korea
Ingredients
Ingredients
Base & Moisturizing Ingredients
Water (Aqua) (65-70%): Main solvent, provides a lightweight base for the serum.
Glycerin (8-10%): Plant-derived humectant, attracts moisture from the air and locks it into the skin.
Butylene Glycol (5-7%): Auxiliary moisturizer and solvent, enhances the serum’s stability and penetration.
Sodium Hyaluronate (1-2%): High-molecular-weight hyaluronic acid, forms a moisture-locking film on the skin surface.
Hydrolyzed Hyaluronic Acid (0.5-1%): Low-molecular-weight hyaluronic acid, penetrates deep into the skin to replenish moisture.
Core Brightening & Spot-Correcting Ingredients
Alpha-Arbutin (5%): Key brightening ingredient, inhibits tyrosinase activity, reduces melanin production, and fades dark spots.
Niacinamide (2%): Blocks melanin transfer, enhances brightening effect, and strengthens the skin barrier.
Adenosine (0.1-0.2%): Soothes irritated skin, reduces redness, and enhances the serum’s gentle properties.
Panthenol (0.5-1%): Vitamin B5, moisturizes and repairs the skin, relieving dryness caused by brightening ingredients.
Auxiliary Soothing & Protective Ingredients
Allantoin (0.3-0.5%): Calms sensitive skin, accelerates the repair of minor skin damage.
Betaine (1-1.5%): Natural humectant derived from sugar beets, relieves dryness and tightness.
Camellia Sinensis Leaf Extract (0.2-0.4%): Green tea extract, provides antioxidant protection, prevents free radical damage to the skin.
Glycyrrhiza Glabra (Licorice) Root Extract (0.1-0.3%): Licorice extract, soothes redness and irritation, enhances the serum’s gentleness.
Stabilizers & Preservatives 1,2-Hexanediol (2-3%): Auxiliary preservative and solvent, mild and non-irritating, suitable for sensitive skin.
Ethylhexylglycerin (0.3-0.5%): Enhances preservative efficacy, adds mild moisture to the skin.
Phenoxyethanol (0.4-0.6%): Mild preservative, compliant with KFDA safety standards, safe for sensitive skin.
Disodium EDTA (0.1-0.2%): Chelating agent, stabilizes the formula, prevents ingredient oxidation and discoloration.
Texture & pH Adjusting Ingredients
Xanthan Gum (0.1-0.2%): Thickener, adjusts the serum’s consistency to avoid runniness, without stickiness.
Citric Acid (0.05-0.1%): pH adjuster, balances the serum’s pH to 5.0-5.5 (matches the skin’s natural pH, avoiding irritation).
How to Use
How to Use
1. Prep Before Application
Gentle cleansing: Use a pH-balanced cleanser to wash the face (avoid over-cleansing, which weakens the skin barrier), then pat dry with a clean microfiber towel.
Tone the skin: Apply an alcohol-free, hydrating toner to balance the skin’s pH and open moisture channels—this maximizes the serum’s absorption.
2. Application Steps
Dispense the serum: Use the dropper to take 2-3 drops of the serum (adjust based on skin needs: 2 drops for daily brightening, 3 drops for targeted spot care) onto the palms.
Warm the serum: Rub your palms together gently for 2-3 seconds to warm the serum—this reduces potential irritation and enhances skin penetration.
Press into the skin: Press the serum onto the face with your palms in upward and outward motions, focusing on areas with hyperpigmentation (e.g., cheeks with sun spots, forehead with dullness). Avoid the eye and lip areas (these areas have thinner skin and may be more sensitive).
Wait for absorption: Let the serum absorb completely (about 30 seconds) before applying moisturizer or sunscreen—this prevents pilling and ensures the active ingredients work effectively.
3. Tips for Specific Concerns
For post-acne marks: Apply 1 extra drop directly to the mark (after cleansing and toning) and gently pat with fingertips—use twice daily (morning and night) until the mark fades.
For sun spots: Use in the morning and night, and pair with a broad-spectrum sunscreen (SPF 30+) during the day—UV rays can worsen pigmentation, so sunscreen is essential for maintaining brightening results.
For sensitive skin: Start with 1 drop every other night for the first 2 weeks (to build tolerance), then gradually increase to 2 drops daily if no irritation occurs.
General Precautions
Store in a cool, dark place away from direct sunlight: Sunlight degrades alpha-arbutin and reduces its brightening effect.
Clean the dropper after use: Wipe the dropper tip with a clean tissue to remove residual serum—prevents bacterial growth and cross-contamination.
Do not use on broken, peeling, or inflamed skin: The active ingredients may irritate damaged skin and worsen discomfort.
If redness, itching, or burning occurs, stop using immediately and consult a dermatologist.

