Ay, cradle cap talaga yan when it's cold and baby's not getting regular baths! A few of us went through this din, and honestly the key is gentle cleaning kahit hindi full bath, try using a soft washcloth with warm water lang on the scalp, or use a mild baby shampoo when you do bathe, then gently brush with a soft brush to loosen the flakes. Since it keeps coming back, baka worth checking with your pedia kung may underlying skin condition or if you need a specific treatment, pero usually it goes away on its own, just keep the scalp clean and moisturized as best you can, even if malamig outside.