COSRX The Vitamin C23 Serum (20ml)

Benefits:

Brightening: High concentration of Vitamin C helps fade acne scars and hyperpigmentation, revitalizing dull and dry skin.

Anti-Aging: Enriched with antioxidants like Vitamin E (tocotrienol), it protects the skin from environmental damage and reduces fine lines and wrinkles.

Hydration: Contains sodium hyaluronate to maintain skin’s moisture levels, keeping it plump and hydrated.

Suitability:

Suitable for various skin types, but those with sensitive skin should conduct a patch test before full application.

How to Use:

• Application: After cleansing, during the serum phase, shake the bottle lightly once or twice and apply a few drops to the skin. Use fingertips to gently massage and absorb the serum, starting from the inside of the face working towards the edges.
• Frequency: Begin with a patch test on the back of the wrist or neck before first use. If well-tolerated, the serum can be used daily; however, if irritation occurs, apply less frequently initially before increasing usage.
• Sun Protection: If applied in the morning, use with a sunscreen of SPF 30 or higher, as Vitamin C can increase skin’s sensitivity to sunlight.

Storage:

Keep refrigerated (3~10°C) and use immediately after purchase. Store upright in the refrigerator once opened and use within two months to maintain efficacy.

Precautions:

• Patch Test: Perform a patch test before full application to check for adverse reactions.
• Avoid Mixing with Certain Ingredients: Do not use in conjunction with hydroxy acids such as AHA, BHA, as mixing may cause skin irritation.