The Ordinary Retinol 1% in Squalane is a highly-stable, water-free solution that combines pure retinol with moisturizing squalane. This potent anti-aging serum helps reduce the appearance of fine lines and wrinkles while improving skin texture and tone. This product contains a high concentration of 1% pure retinol suspended in squalane oil for enhanced stability and reduced irritation. It should be applied in the evening after water-based serums but before heavier creams. As retinol can increase sun sensitivity, sunscreen use during the day is essential. Start with less frequent application and gradually increase use as tolerance builds. Not recommended during pregnancy or breastfeeding. Store in a cool, dry place away from direct sunlight.