COSRX The Retinol 0.5 Oil is a potent facial oil infused with 0.5% pure retinol, designed to target signs of aging. This highly concentrated formula promotes smooth skin texture and visibly firm skin, addressing concerns such as loss of skin elasticity, moisture loss, fine lines, deep wrinkles, and acne breakouts. It also helps reduce pore size and improve uneven skin tone and texture. Key ingredients include pure retinol, squalane, and tocotrienol. For beginners, it is recommended to use 2-3 times weekly at nighttime, applying only to areas of concern. After Week 3, you can increase usage to the entire face every night. Recommended for users already accustomed to retinol seeking a more potent option.