I used clobetasol propionate and salicylic acid lotion .on my scalp. Just once .coz it was itching. Actually it was prescribed to my brother not me .and I didn't know it was a very powerful steroid. And I used a good amount of it on my entire scalp .will it cause any side effects? Like acne etc. Or weight gain on my face and neck. And i'm also on antibiotic.