For active acne, use a daily face wash containing salicylic acid or benzoyl peroxide, and apply a topical retinoid (like adapalene) at night. For dandruff, use an anti-dandruff shampoo with ketoconazole, zinc pyrithione, or selenium sulfide 2-3 times a week, leaving it on the scalp for 5 minutes before rinsing. For acne scars, it is crucial to clear active acne first. Once controlled, professional treatments such as microneedling, chemical peels, or laser resurfacing are highly effective. I highly recommend consulting a dermatologist for a personalised prescription plan.