COSRX The Vitamin C 23 Serum

Description:

Cosrx highly concentrated Vitamin C serum with 23% Ascorbic Acid targets the appearance of dark spots, dullness, and uneven skin tone, with squalane and hyaluronic acid for enhanced comfort during use.

May sting initially—gradual introduction is recommended. Keep the container sealed away from light and heat. Use morning or evening with strict sunscreen application during the day; do not mix with strong retinol at the same time without experience.

How to use:

1. On clean, dry skin, apply a small amount and pat until absorbed.
2. Follow with a moisturizer. Start every other day if your skin is sensitive.
3. In the morning, broad-spectrum sunscreen is mandatory.