How do you manage children's skin blemishes? Do you go to a separate hospital?

I've been wearing a mask for over three years.

On the side with the under-eye and cheekbone

I have developed dark spots..

At first, it was a little while.

These days, there are quite a few.

Young children also dislike washing their face with facial cleanser.

I didn't even put on sunscreen.

When is the best time to treat children's moles?

They say dermatology medicines are strong.

I'm wondering if I should treat it since it has grown a bit.

If treatment is still possible now

Please recommend a hospital.