Niacinamide 10% + Matrixyl 2%

*For external use only, avoid contact with eyes. If any discomfort occurs, please discontinue use immediately. *Do not use in combination with products containing vitamin A derivatives, vitamin C or acidic ingredients. *The vitamin C or acidic products may lower the pH value, affecting the structure of vitamin B3 and potentially increasing irritation when used together. *Due to the high concentration of vitamin B3, white crystalline powder residue may appear on the bottle neck when residual serum dries. *As the density of each product varies, the liquid level may differ. Please make a purchase only if acceptable. *Please perform a skin test on the inside of the elbow before use. Use only if there is no adverse reaction. *Safe for use during pregnancy.