My 15 year old son wears foundation on?

My son uses foundation to cover his acne up but he is currently on accutane should i let him i mean if it makes him confident and at school then is it fine becuase my daughter wears a full face of makeup and i say nothing so should i just leave it but he told me once he is acne free he will not put on foundation
Update: Hes not gay he has a girlfriend
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