Can you use renova (tretinoin) once a week and get results ?

See a dermatologist: Renova (tretinoin) is a retinoid product that is a derivative of vitamin a. Retinols do help with the improvement of fine lines, wrinkles and skin aging, but they can be irritating to the skin, as well. If your skin is very sensitive, we recommend using these products every other night or every 3rd night, to start. Please be aware that retinoid products can predispose your skin to redness. See a derm.

Use more often: To start with, i recommend to my patients that it be used every night to get good results. Even after four months, i ask them to use three nights a week.