Hi. I am the father of my 5 month young son. I mostly keep my son inside mosquito net. But when he is outside for few minutes mosquito bites him. His skin turns red and it's going off after few days. But some spots turns into black. Is it good to apply any mosquito repellent creams like mamaearth or is there any ointments for getting rid of the black spots? because it is not fading off by its own.