If you want to cover up pimples, birthmarks, or other unwanted things, then a concealer is the way to go. Among other things, this product helps battle blemishes.
Amazon
Makeup Revolution Conceal and Hydrate Concealer, Full Coverage & Matte Finish, C12 for Medium/Dark Skin Tones, Vegan & Cruelty-Free, 0.7 Fl Oz