Thanks for writing to us.
I would advise you to stop applying melalite forte as it has irritated your skin and has led to redness. Apply a mild steroid like hydrocortisone
for few days along with a moisturiser. Once the redness and irritation subsides stop hydrocortisone as it can aggravate acne in long run.
To treat acne
Use cetaphil oily skin cleanser
Apply adapalene gel in night and clindamycin
Gel twice in a day over acne lesions
Apply Kojic acid based cream over acne spots to clear the pigmented marks
If having scars consult a dermatologist
to take peeling sessions or dermaroller
Hope that helps. Take care