You can start applying scar cream once your stitches are out and the incision has fully closed, with no scabs, gaps, or drainage. For most people, this means roughly two weeks after surgery, though the exact timing depends on the type of stitches used and how quickly your skin heals. Applying scar cream to a wound that hasn’t completely resurfaced with new skin is ineffective and can cause irritation or infection.
The Two Timelines Based on Stitch Type
The answer depends on whether your surgeon used dissolvable or permanent stitches. If your incision was closed with absorbable (dissolvable) sutures and adhesive strips (Steri-Strips), scar treatment can begin about two weeks later, after the strips have been removed and the incision is completely healed. If permanent sutures were used, scar treatment begins after the sutures are removed, which your surgeon will schedule based on the wound’s location and healing progress.
Permanent stitches on the face typically come out in 5 to 7 days. Stitches on the torso, arms, or legs often stay in for 7 to 14 days. Joints and areas under tension may need closer to two weeks. Your surgeon will tell you when to come in for removal, and that appointment is the natural checkpoint for asking about scar cream.
What “Fully Healed” Actually Looks Like
The key milestone is something called re-epithelialization: your skin has grown a complete new layer over the wound. In practical terms, this means the incision line looks like a closed, dry line of pink or reddish skin with no gaps, no crusting, and no fluid leaking out. You should be able to gently run a finger across it without feeling an open edge.
Do not start scar cream if you notice any of the following:
- Drainage or oozing of any kind, whether clear, yellow, or cloudy
- A scab still covering the incision, which means the skin underneath hasn’t finished closing
- Redness, warmth, or swelling spreading outward from the wound
- The incision opening up, getting deeper, longer, or wider
These are signs the wound is either still healing or possibly infected. Thick, cloudy, cream-colored discharge is a classic sign of infection. If you see that, the priority is treating the infection, not preventing a scar.
Why Timing Matters for Scar Prevention
Scar cream applied to an open or partially healed wound doesn’t just fail to help. Research using silicone gel sheeting found that application immediately after surgery, before the skin had fully resurfaced, was ineffective at reducing scarring. The cream needs intact skin to work on. Once that new skin layer is in place, your body enters a remodeling phase that lasts months, and that’s the window where scar treatment makes the biggest difference.
Silicone-based products, the most widely studied scar treatments, work by hydrating the outer layer of skin over the scar. This increased moisture signals the underlying cells to slow down collagen production. Scars form when your body overproduces collagen during healing, creating thick, raised tissue. By restoring balance between collagen production and collagen breakdown, silicone gel helps scars become softer and flatter over time.
How Long to Keep Using Scar Cream
Starting on time matters, but consistency matters more. The recommended approach is to apply silicone gel or wear silicone sheeting for at least 12 hours a day over a period of 2 to 3 months. Many surgeons suggest twice-daily application of gel products (morning and night) for that full duration. Scars continue remodeling for up to a year or more, so some people extend treatment beyond three months, especially for scars on visible areas.
If you stop after a week or two because the scar looks fine, you may miss the period when hypertrophic (raised, thickened) scarring develops. These raised scars often don’t appear until weeks after the wound closes, which is exactly why sustained treatment is recommended, particularly if you have a personal or family history of thick scarring or keloids.
Silicone Gel vs. Other Scar Products
Silicone-based products have the strongest evidence behind them. They come in two forms: gel that you apply like a lotion and sheets that you cut to size and stick over the scar. Both work through the same hydration mechanism. Comparative studies have found similar effectiveness between gel and sheets, though gel tends to be easier to use on awkward locations like joints or the face.
Products containing onion extract (the active ingredient in brands like Mederma) are another popular option. A head-to-head study comparing silicone gel with onion extract against silicone sheets alone found no statistically significant difference in preventing raised scars. The onion extract group did show slightly better pliability (softer scars), but color and pigmentation outcomes were the same between the two. Either option is reasonable. Some people use both at different times of day.
In animal models, silicone sheeting combined with additional occlusive dressing reduced raised scar formation by 80%, which underscores just how much keeping the scar hydrated and covered contributes to a better outcome.
Protecting Your Scar From the Sun
New scars are extremely vulnerable to sun damage. UV exposure can cause permanent darkening (hyperpigmentation) that’s much harder to treat than the scar itself. Sunscreen with SPF 30 or higher should go on every time your scar will be exposed, and you should reapply every two hours when outdoors.
If you’re using silicone gel, let it dry completely before layering sunscreen on top. If you’re using silicone sheets, apply sunscreen to the skin around the sheet, or cover the area with UV-protective clothing. This sun protection routine should continue for at least a year after your wound heals, since new scar tissue remains more sensitive to UV than surrounding skin for that entire period.
A Practical Timeline to Follow
Here’s what the healing-to-treatment sequence looks like in practice. During the first few days after stitches, keep the wound clean and protected per your surgeon’s instructions. Once stitches are removed (or dissolve) and any adhesive strips fall off or are taken off, check that the incision is fully closed with no scabs or drainage. If it is, you can begin applying scar cream.
Apply silicone gel twice daily or wear silicone sheeting for at least 12 hours per day. Continue this for a minimum of 2 to 3 months. Layer sunscreen over the scar whenever it’s exposed to sunlight. If at any point the scar starts getting thicker, more raised, or itchy despite consistent treatment, that’s worth bringing up with your doctor, as additional options like steroid injections or laser therapy can address more stubborn scarring.