Hello and Welcome to healthcaremagic.
If I was your treating doctor I would have advised you to start with
Azithromycin. I prefer to give it in pulse form i.e in a dose of 500mg for three consequtive days in a week for 4-12 weeks.
Topical antiacne medicines include
clindamycin,
benzoyl peroxide and
retinoids (
adapalene).
Suncros 50 is a sunscreen and because of its high spf it is oily, therefore it can exacerbate acne. For the time being, I would advice that you stop using everything else on your face except for antiacne medicines.
While topical clindamycin gel is for day time application, I give either benzoyl peroxide gel 2.5% OR a topical retinoid like Adapalene gel for night application. Adapalene is a first line antiacne medicine. It is antiinflammatory, comedolytic and thus prevents new comedones from developing.
Deriva-cms contains adapalene+clindamycin, I would advice that you continue with it.
Using a gentle cleanser like cetaphil cleansing lotion and shampooing the scalp with an antidandruff shampoo thrice weekly, would also help.
regards