Before the chemical peel, the first most important thing is to consult a dermatologist. During the consultation, you can explain the skin goals that you have set, as well as the time frame in which you would like to see the results. The dermatologist examines your skin, determines the problem, and assesses your skin type. These two factors will help decide the type of peel, the number of sessions needed, and a road map of the treatment plan can be issued.
The second part is the skin preparation for the peel. As the chemical peel is going to exfoliate the upper layers of the skin, it is important that the skin is ready to be exfoliated. Apply a gentle face wash, moisturizer, and robustly use sunscreen for at least 2 weeks prior to the peel. Also, some dermatologists prescribe their patients to apply skin lightening or glycolic acid creams at bedtime, especially in darker skin individuals. This helps the skin to get even penetration of the peel. But do check with your dermatologist, as most of them will have to stop the use of night creams at least 2 days before treatment.
Do not bleach, wax, thread or use scrubs at least 1 week before the peel. If you have accidentally done any of these above, it will be better to postpone the peel as they could make your skin sensitive to the peel.