baby rash or acne?

Mommys pwede patingin ng pic. Kanina ko Lng napansin, may parang rash or acne si LO around his mouth. wala naman sya lagnat or kahit ano and he doesnt seem to be bothered by it naman. Anong klaseng rash po ba to and ano pwde ko gawin para mawala? Ftm here. Thanks mommys!!