Does Scar Cream Work? | What Science Actually Says

If you’ve got a fresh scar and you’re wondering whether that tube of scar cream in the drugstore aisle is worth the money, here’s the honest answer: some products help, most do less than their labels promise, and none erase a scar completely. The science points to silicone as the ingredient that earns its spot in your cabinet.

What Doctors Actually Recommend For Scars

The NHS guidance on scars is clear: massage with a water-based cream can help once the wound has fully healed, but the products with the strongest support for problem scars are silicone gel or silicone sheets. These are specifically recommended for raised hypertrophic or keloid scars, which are the ones that grow thick and red above the surrounding skin.

Silicone products work by forming a protective film over the scar. That film locks in moisture, which research shows can help soften tissue, reduce redness, and flatten raised areas over time. Some people also notice less itching and discomfort. The catch is that results come slowly — usually several weeks of consistent use before you see a difference, and up to 90 days or longer depending on the scar’s age.

Your standard drugstore “scar cream” that doesn’t contain silicone? The evidence is thin. Most dermatologists would tell you it’s not going to hurt, but it’s likely not going to dramatically change your scar either.

How To Use Silicone Gel And Sheets Correctly

These products only work if you use them right, and most people make the same mistakes. Here’s the process that actually follows clinical guidance:

1. Wait until the wound is fully healed. Silicone products go on closed, healed skin only — never on open wounds, broken skin, or scabs. This is non-negotiable.
2. Clean and dry the scar area. Any residue from lotions or oils can interfere with how well the silicone adheres.
3. For gel: apply a very thin layer twice daily. Let it dry into a flexible film before putting on clothing, makeup, or pressure garments. Too much gel leaves a sticky mess that doesn’t work better.
4. For sheets: cut the sheet to match your scar’s size, place it over the scar, and wear it for many hours a day. NHS guidance varies between 8 and 12 hours daily, with some protocols starting with a shorter 4-hour period on the first two days to let your skin adjust.

Be consistent. Skipping days stretches out the timeline, and stopping early means the scar may revert toward its previous appearance.

What Scar Cream Can And Cannot Do

The honest limits matter more than the marketing. Silicone-based products can improve how a scar looks and feels — softer, flatter, less red — but they do not remove a scar. The tissue is permanent; you’re improving its appearance, not erasing it.

They also won’t help an unhealed wound, and there’s no product on the market that will turn a scar back into normal skin. Anyone promising complete removal is overselling.

If you’re weighing which product to buy, our tested roundup of the best cream for scar healing breaks down the top options and which scars each one suits best.

Common Mistakes That Sabotage Scar Treatment

Most people don’t fail because the product doesn’t work — they fail on the basics. Applying silicone to broken or unhealed skin tops the list; it does nothing and can irritate. Layering a cream underneath silicone sheets or gel is another frequent error, since some products are designed to sit directly on skin, and anything between them and the scar blocks the film from forming.

Using too much gel leaves it sticky and stops it drying into the protective layer it needs. And expecting overnight results sets everyone up for disappointment. Silicone treatment is a months-long commitment, not a two-week fix. If you’re consistent and your scar still isn’t improving after several months, that’s the point where a dermatologist — not another over-the-counter tube — is the right next step.