Prepare the skin well before applying makeup. Use a hydrating moisturiser to make the skin supple and smooth so that the makeup glides on properly and does not look cakey.
Colour correct
Choosing the right colour corrector for acne is an extremely important step. Use a green colour corrector to camouflage the redness of acne or acne marks.
Conceal
Opt for a concealer that exactly matches your skin tone. Never use a lighter shade of concealer to hide imperfections else it will turn grey after a while.
Foundation
Use sheer or medium coverage hydrating foundation. Never use cream or full coverage foundation as it may cause dryness on the skin, and make the area around acne look flaky.