Use a gentle face wash twice daily, avoid scrubbing or picking pimples, and apply a non-oily moisturiser and a high SPF sunscreen every day to help prevent dark spots from worsening. Over-the-counter skin care products containing salicylic acid, benzoyl peroxide, niacinamide, or azelaic acid may help with acne and marks. If the problem persists or worsens, please see a dermatologist for proper treatment.