Suggest Substitute For Beta Lactam Germicidal Antibiotic For Bumps On Scalp

I have repeated itchy bumps on my scalp which are very itchy. I notice that doctors just look at your scalp for 30 secnds and prescribe something that does not work. After suffering for multiple years I have found some advice from another (ex) sufferer. I want to be prescribed Beta Lactam Germicidal antibiotic and also prescption hydrating cleanser froo my scalp. Can you tell me the brand names in India for these?