Any tips to treat this ?

Coconut oil!

http://www.homesteadingongrace.com/2015/06/coconut-oil-cradle-cap.html?m=1

That is cradle cap. My daughter had, doc recommended to use head n shoulder shampoo( just a small amount) for a week along with oil on the area after... and it would go away. Sure enough after a week of head n shoulders and baby oil, it all flakes off

I only used baby oil because of the texture of my daughter hair .. but I love organic coco oil

Coconut or almond oil after a bath and morning n night x

Our doc said put baby oil on it and let it sit about 15 min then take a baby brush and itll just brush off. We did it once and it never came back. Just put baby oil on her head of it was looking dry

Coconut oil