I had small white spots on face barely visible from distance, i went to doctor and he diagnosed it as pityriasis Alba and prescribed pigolyn and after using it for 2-3 days my face now has black spots on those areas, now he has suggested to apply melamet and pigmohyde plus which I’m scared to use i might end up having more side effects or rather visible white spot or any other issue. Dr is asking to apply those creams asap to address the newly developed pigmentation early. P.S: My skin is dry.