My baby is having white spots on his face.. is dis ptyriasis alba or something else

Dr. Priyanka Patel plz

How old is your baby since the image is blur identification of patch marking is difficult I will advise you to see your dermatologist for tenia vesicolour

He is 9 months old .. hv visited to paediatrician and he told me dat he is having ptyriasis alba. Given desonide cream and m using mamaearth baby moisturizer.. mam will it be disappeared soon?