How to Treat Old Scars | Evidence-Backed Options

A scar that’s been with you for years won’t vanish, but the right routine can fade it noticeably. Whether you’re dealing with a flat mark, a raised ridge, or a pitted acne scar, the treatment path depends on the scar type, its location, and your skin’s response. The good news: you have options, from drugstore silicone gels to dermatologist-administered procedures, and most don’t require surgery.

Understanding Scar Types First

Treatment only works when it’s matched to the scar’s structure. Flat scars that are darker or lighter than your skin respond best to topical care and sun protection. Raised hypertrophic scars — which stay within the original wound boundary — often need silicone plus in-office injections. Keloids, which grow beyond the wound edges, are the most stubborn and typically require medical treatment. Atrophic or depressed scars from acne or chickenpox call for surface-leveling procedures.

Silicone: The Home-Treatment Gold Standard

Silicone gel and sheets are the most evidence-backed first-line option for flat and raised scars. They work by creating a protective barrier that hydrates the scar and helps regulate collagen production. Apply silicone gel twice daily, or wear silicone sheets for at least 12 hours per day — do this consistently for at least two months before judging results. If you see no improvement after a full trial of consistent use, escalate to professional options. Only start silicone after the wound is fully closed and epithelialized; applying it earlier can irritate the new tissue.

You’ll find several silicone-based products on the market, and picking the right formula for an older scar matters. If you’re ready to buy, our tested roundup of the best creams for old scars breaks down what actually works and why.

Sun Protection: Non-Negotiable for Scar Fading

Ultraviolet exposure darkens scar tissue, undoing months of treatment invisibly. Cover the scar with clothing or a dressing when you’re outside, and apply SPF 30 or higher directly to the scar every day — even in winter. Medical guidance recommends this protection for at least 12 to 18 months after the scar forms. Skipping sunscreen is one of the most common and costly mistakes people make with old scars.

In-Office Procedures: When Home Care Isn’t Enough

If silicone and sun protection haven’t moved the needle after two months, or if the scar is raised, painful, or itchy, a dermatologist has several tools. Intralesional corticosteroid injections are the standard next step for hypertrophic scars and keloids. For more stubborn cases, 5-fluorouracil may be added as an adjunct. Atrophic scars — the dented kind from acne or injury — respond better to laser therapy, dermabrasion, chemical peels, or fat grafting. Surgical excision is typically a last resort, especially for keloids, because the scar can return unless paired with post-surgery treatments like steroid injections or radiation.

All of these are medical procedures that should be matched to your specific scar type by a clinician. Self-referring to a laser clinic without a proper diagnosis wastes time and money.

Common Mistakes That Keep Scars Stubborn

• Starting silicone before the wound is fully closed — this irritates the new skin and can make scarring worse.
• Expecting a scar to disappear completely. Realistic improvement means softer, flatter, less discolored — not invisible.
• Massaging before the wound is fully healed. Once healed, gentle massage with a water-based cream a few times a day for up to 10 minutes can help, but only after epithelialization is complete.
• Assuming one treatment fits all scar types — a keloid and an atrophic scar need totally different approaches.