COSRX The Niacinamide 15 Serum - 20ml

You can use the serum once or twice daily, depending on your skin's tolerance.

Yes, it can be combined with other skincare products, but introduce them gradually.

It is suitable for most skin types, particularly those concerned with pores, oiliness, and acne.

Reduce the frequency of use or dilute with a moisturizer. If irritation persists, stop using the product.

Results vary, but many users see improvements within a few weeks of consistent use.

While it can help improve skin texture, it may not completely eliminate acne scars. For scar treatment, consider consulting a dermatologist.

Refer to the product packaging for the expiration date after opening. Store in a cool, dark place.

Reduce the frequency of use or dilute the serum with a moisturizer. If irritation persists, discontinue use and consult a dermatologist.

Ensure your skin is damp before application. Use a smaller amount.

This is a normal initial reaction as the skin adjusts. Continue use and monitor. If breakouts persist, consult a dermatologist.