Mizon, Retinol Youth Serum 0.1%, 0.99 oz (28 g)

Avoiding the eye area, apply 3-4 pumps to clean skin only once daily in the evening. Follow with your preferred moisturizer as needed. Use twice a week for the first 2 weeks, then continuous use every other night is recommended. Use as often as skin can tolerate.

Twice, first for 2 weeks, then every other night.