Applying makeup immediately after PRP therapy could have several implications. The most prominent of them is clogging of your skin pores, which would prevent the serum from PRP treatments from working efficiently. You won't get the desired results this way. Ideally, you should avoid makeup products for about 2 to 3 days from the treatment. But again, several factors could influence this time period. Ask how long after your skin treatment; it would take to use makeup products.