Suggest Treatment For Acne In 22 Year Old

helllo doctor!im male 22 and been having acne since last 2 years...things is that i sued sodium bicarbonate mixed with tap water and applied it on my skin and my skin got burned..i even los my pigment where i had acne:(maybe the pH was too alkaline.
anyway its been 7 months now and little by little im getting back my skin color but it takes time.the doc advised me to hydrate my skin every morning and at night before going to bed to use hydrocortisone.Is my actual treatment corrct one?What would u guys suggest??thx...