Long-standing acne that improves with treatment but returns is common, and the key is to shift from short-term treatment to a consistent maintenance plan that controls acne, fades pigmentation, and addresses scars. Continue a gentle routine with a daily cleanser, sunscreen, and a maintenance treatment such as a topical retinoid or benzoyl peroxide a few times per week to prevent new pimples, while avoiding stopping treatment suddenly. For dark spots (post-inflammatory pigmentation), ingredients like azelaic acid, niacinamide, or mild chemical peels can help over time, along with strict sun protection. For scars, creams alone have a limited effect, so procedures like microneedling, chemical peels, or laser therapy done by a dermatologist may be needed. If acne is still active, your doctor may adjust medicines or consider a longer course of options like Isotretinoin in selected cases. The best results come from regular follow-up, patience, and sticking to a long-term plan rather than stopping treatment once acne improves.