To reduce stains, you can't get rid of acne. You can use the dermabrasion plug-in and then use the stamp tool to remove the acne marks that are difficult to grind off. Noise removal is aimed at the whole picture, while the seal tool is aimed at a small part.

/lk/cywZuygipG8jf (extraction code: ae0a) dermabrasion tool, including registration code.