Skin preparation prior to chemical peel
No, you do not have to do anything prior to a chemical peel. With that being said, it also depends on what your goals. If you have a lot of sun damage, I would recommend starting a "skin brightening" regimen approximately 4 weeks prior to peel. 3 weeks on and stop 1 week before. This will help prep your skin so that the chemical peel can penetrate.
Again, there is no right way or wrong way. I would recommend seeing a paramedical aesthetician so...