What it is: A highly concentrated oil formulated with 0.5% pure retinol for powerful anti-aging care.What it does: The formula uses 0.5% stabilized, pure retinol for powerful get that helps skin become accustomed to retinol. It helps improve skin that is experiencing progressive signs of aging such as loss of elasticity and dryness. It is an intensive treatment for a more youthful, radiant complexion. How to use: Start small and slow. During the evening, apply 1–2 drops of the retinol to hand and tap with fingertips from the inside out, let absorb. Limit your initial use to three times per week. Gradually increase frequency to every other night and use as tolerated. 0.67 oz.