Silicone gel for scars: skip the vitamin E, this has real evidence
Silicone gel for scars: skip the vitamin E, this is the one with proof
Time to effect
Core practice
▪ The challenge at hand
Raised, firm scars, hypertrophic or keloid, are commonly treated with vitamin E oil or onion-extract products, both of which have weak or essentially no supporting evidence. Silicone gel or sheeting is the actual best-evidenced non-invasive option for flattening and preventing these scars, and it's recommended as first-line in scar-management guidelines, yet most people reach for the wrong product first.
The facts worth knowing: silicone, not vitamin E, is the evidence-backed choice; it works as prevention on a closed wound, so starting early on a scar you're worried about is worth doing rather than waiting until it's already raised; and consistency over weeks, not a single application, is what actually delivers the result.
▪ What it is
This is silicone gel or silicone sheeting, applied directly to a fully closed, healed scar or wound for extended daily periods, used both to treat existing raised scars and to prevent them on healing wounds.
▪ Why this is surprising
Silicone gel or sheeting is the best-evidenced non-invasive option for flattening and preventing raised scars, recommended as first-line in scar-management guidelines, yet most people reach for vitamin E or onion-extract products that have weak or no evidence. The non-obvious facts: silicone, not vitamin E, is the evidence-backed choice, it works on closed wounds as prevention, so start early on at-risk scars, and consistency over weeks is what delivers the result.
▪ How it works
Calming the overactive scar-forming signal.
Occlusive silicone hydrates the outer skin layer over the scar and normalizes how skin cells signal to each other, which reduces the overactive collagen production that drives hypertrophic and keloid scarring. Reduced water loss and altered mechanical and chemical signaling gradually flatten and soften the scar and reduce redness over the weeks and months of consistent use.
▪ The research
What the evidence says
A Cochrane systematic review found that silicone gel sheeting reduced the incidence of hypertrophic scarring in people prone to scarring, compared with no treatment, supporting its use as a first-line, evidence-based option. The review noted that many of the underlying trials had methodological limitations, so while it's the best-evidenced non-invasive option available, the evidence base isn't beyond all criticism.
O'Brien L, Jones DJ. Cochrane Database Syst Rev. 2013;(9):CD003826. PMID: 24030657.
started
completed
noticed a change
made it routine
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▪ What to expect over time
Consistent use, roughly 12 or more hours daily, over 2 to 3 months is what the evidence supports, shorter or inconsistent use is unlikely to show the same result.
Side effects
Occasional skin maceration, irritation, or itch under occlusion, reduce wear time if this occurs.
Who should be cautious
Do not apply to open wounds, the wound must be fully closed first. Keloids extending beyond the original wound, or scars near joints or cosmetically sensitive areas, may need dermatology or plastic surgery input (such as steroid injection or laser). Always consult a care provider when adding or removing a supplement from your routine.
FAQ
Should I use vitamin E oil on my scar instead?
Can I start this before the scar looks raised?
Is Coco a replacement for my doctor?
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Educational only. This is not medical advice. Always talk with a qualified clinician before changing medications, supplements, or care plans.