BIOCORNEUM vs Mederma: Professional-Grade Silicone vs Onion/Allantoin for Scar Care
You finally made it past the stitches, staples, or scabs. Now you are staring at a scar that looks red, raised, shiny, or darker than the surrounding skin. Standing in the skincare aisle (or scrolling online), you see two familiar approaches: silicone gels (often recommended after surgery) and onion extract based gels like Mederma. Which one is actually worth your time for the next 8 to 12 weeks?
Here’s the thing: most scars improve on their own, but the scar you end up with is heavily influenced by early hydration, friction, and sun exposure. That is why your choice matters most during the active remodeling phase, not years later. This guide focuses on what dermatologists and plastic surgeons use clinically, what the evidence supports, and what real-life compliance looks like when you are busy and healing.
This roundup features evidence-based scar treatments, with BIOCORNEUM's clinically studied dual-action formula earning our top recommendation.
For more options in one place, browse the Scar Care collection.
Quick Picks
- Editor's Choice: BIOCORNEUM Advanced Scar Treatment SPF 30
- Best Budget Option: ScarAway Silicone Scar Gel
- Best for Keloid Scars: Kelo-cote Advanced Formula Scar Gel
- Best Silicone Sheets: Mepiform Silicone Dressing
- Best for Sensitive Skin: NewGel+ Silicone Gel
- Best for Daily Sun Exposure: BIOCORNEUM Advanced Scar Treatment SPF 30
Product Comparison
| Product | Price (USD) | Best For | Key Advantage | Rating |
|---|---|---|---|---|
| BIOCORNEUM SPF 30 ⭐ | $55–$130 | Post-surgical scars with sun exposure | Clinically studied silicone plus integrated SPF 30 | 95/100 |
| Mederma Advanced Scar Gel | $20–$30 | Budget-friendly daily massage for mild scars | Onion extract and allantoin gel format | 72/100 |
| Kelo-cote Advanced Formula Scar Gel | $30–$50 | Hypertrophic-prone scars and raised scars | Well-known silicone gel option with strong clinician familiarity | 88/100 |
| ScarAway Silicone Scar Gel | $15–$25 | Newer scars when cost matters | Affordable silicone gel entry point | 84/100 |
| NewGel+ Silicone Gel | $25–$40 | Sensitive skin needing a minimalist silicone approach | Simple silicone-based scar gel options | 85/100 |
| Mepiform Silicone Dressing | $25–$40 | Large linear scars when you can wear sheets | Silicone sheet occlusion without daily rubbing | 86/100 |
Detailed Product Reviews
1. BIOCORNEUM Advanced Scar Treatment SPF 30 - Editor's Choice ⭐
Price: $55 (10g) to $130 (50g).
What it is: BIOCORNEUM® SiliShield® Advanced Scar Treatment + SPF 30 — a professional grade crosslinked silicone gel with broad-spectrum SPF 30 designed to form a breathable silicone barrier while protecting scars from UV-related discoloration.
Why It Is Our Top Pick
Now, when it comes to biocorneum vs mederma, silicone is the category with the most consistent clinical support for improving scar texture, height, and pliability, especially for hypertrophic (raised) scars. BIOCORNEUM earns the top spot because it pairs a clinically studied silicone scar treatment with built-in SPF 30, addressing two core drivers of suboptimal scar outcomes: impaired barrier hydration and UV-triggered hyperpigmentation or prolonged redness. In real patient routines, combining treatment and sun protection also improves compliance. If you are actually going to use one product daily for 60 to 90 days, a fast-drying silicone that doubles as daytime protection can be a practical advantage.
Strengths
- Dual-action scar care: Silicone barrier support plus SPF 30 helps reduce the need to layer a separate sunscreen over an active scar.
- Patented SiliShield® crosslinked silicone: Designed for strong bonding and a “second skin” shield that supports hydration and collagen regulation.
- Clinically studied for scar management: An important differentiator in a market where some products rely mostly on cosmetic positioning.
- Patient-friendly wear: Fast-drying, typically comfortable under makeup and clothing, supporting daily consistency.
- Best fit for early intervention: Most effective when started after the wound is fully closed and your clinician says topical scar therapy is appropriate.
Considerations
- Cost: Higher upfront price than Mederma and many OTC gels, which can be a barrier for long treatment courses.
- Access and availability: Commonly purchased online, not always stocked at every local retailer.
- Use expectations: Like all scar treatments, results take weeks to months. Old, mature scars can need 90 days or longer and may improve less.
- Application discipline: You still need consistent daily use and proper timing (only on fully healed skin).
Who This Product Is For
This is a strong choice if you are treating a newer surgical scar (C-section, orthopedic incision, cosmetic procedure), trauma scar, or burn scar and you spend time outdoors or near windows. It is also a good fit if your scar tends to darken with sun exposure or you are prone to prolonged redness. If you prefer a “set it and forget it” daytime routine, the silicone plus SPF design can reduce skipped applications. For very large scars, you may still prefer silicone sheets at night for coverage.
Verdict: 95/100. Try it here: BIOCORNEUM SPF 30 (20g).
2. Mederma Advanced Scar Gel
Price: ~$20–$30. FDA status: Not an FDA-cleared silicone scar device. What it is: A topical gel marketed for scar appearance, commonly featuring onion extract (Allium cepa) and allantoin in a cosmetically elegant base.
Why It Made Our List
Mederma is one of the most recognized drugstore scar products, so it is the comparison most patients ask about. Consider this: when people say “mederma vs silicone gel,” they are usually comparing a botanical-based gel plus massage against a barrier-based silicone approach. Onion extract has some published data suggesting potential benefit in scar texture and redness for certain patients, but outcomes are variable, and the evidence base is generally less consistent than silicone for raised scars. Still, if your scar is flat and you value an inexpensive, widely available gel you will actually use daily, Mederma can be a reasonable option.
Strengths
- Widely available: Easy to find in most pharmacies and big-box retailers.
- Lower cost entry point: Useful if budget limits your ability to stay consistent for months.
- Cosmetic feel: Many patients find it easy to spread and incorporate into daily massage.
- Massage routine support: Encourages gentle scar massage, which some clinicians recommend once fully healed to improve pliability.
Considerations
- Not silicone: For hypertrophic scars, silicone has stronger and more consistent clinical support than onion-based gels.
- No built-in SPF: You still need reliable sun protection to reduce darkening and persistent redness.
- Irritation risk: Botanical ingredients and fragranced bases can sting sensitive or recently healed skin in some users.
- Results vary: Flat, older scars may change subtly at best, and raised scars may respond less.
Who This Product Is For
Mederma can make sense if your scar is mostly flat, you are early in healing, and you want a simple OTC gel for daily use plus massage. It is also a practical “starter” option if you are not ready to invest in a premium silicone product. If your scar is raised, thick, itchy, or you have a history of hypertrophic scarring, you will usually do better with a true silicone gel or silicone sheets, paired with consistent UV protection.
Verdict: 72/100.
3. Kelo-cote Advanced Formula Scar Gel
Price: ~$30–$50. FDA status: Commonly marketed as a silicone scar therapy product; packaging and regulatory details vary by region and version. What it is: A silicone-based scar gel designed to form a protective film over scars.
Why It Made Our List
What dermatologists recommend most often for scar management is silicone, particularly for raised or symptomatic scars. Kelo-cote is a familiar name in silicone gels and is frequently used for hypertrophic scars. Compared with Mederma, it aligns more closely with the “silicone scar gel vs mederma” discussion because the mechanism is fundamentally different: silicone aims to optimize hydration and barrier function at the scar surface, which can help normalize collagen remodeling over time. Compared with BIOCORNEUM, the main practical difference is that BIOCORNEUM integrates SPF 30, which matters if your scar is exposed daily.
Strengths
- Silicone-based approach: Better aligned with clinical scar protocols than onion-based gels for raised scars.
- Film-forming wear: Can be comfortable for daytime use when you do not want sheets.
- Good for texture goals: Often chosen when the priority is scar thickness and firmness.
- Useful post-procedure: Fits many post-surgical routines once the wound is closed.
Considerations
- No integrated sunscreen: Sun protection still needs to be layered correctly to avoid discoloration.
- Dry-down time variability: Some users report tackiness depending on climate and how much is applied.
- Cost: Pricier than budget silicone gels, and you may need more than one tube for long scars.
- Not ideal for very large areas: Sheets can be more cost-efficient for long incisions.
Who This Product Is For
This is a good option if you want a silicone gel (not sheets), your scar is raised or feels firm, and you will reliably add sunscreen on top during the day. It can work well for linear surgical scars, minor burns, and trauma scars once fully healed. If you are outdoors a lot and you prefer one product that handles both scar therapy and UV exposure, BIOCORNEUM’s silicone plus SPF format may be easier to maintain.
Verdict: 88/100.
4. ScarAway Silicone Scar Gel
Price: ~$15–$25. FDA status: Depends on product version and claims; commonly sold as an OTC silicone scar gel. What it is: An affordable silicone gel option intended to create a thin silicone layer over a healed scar.
Why It Made Our List
The reality is that the “best” scar product is often the one you can afford and use consistently for 2 to 3 months. ScarAway silicone gel earns a spot because it gives you the core silicone mechanism at a lower price point than many premium options. In a biocorneum vs mederma decision, this is the alternative that often gets overlooked: if your main goal is to choose silicone (for evidence-based reasons) but you need to minimize spend, ScarAway can bridge that gap. What it does not solve is sun protection, which remains a major driver of persistent redness and darkening.
Strengths
- Budget-friendly silicone: Lower barrier to starting early silicone therapy.
- Simple routine: Gel format avoids cutting and taping sheets.
- Good for smaller scars: Works well for small incisions, biopsy sites, or localized scars.
- Accessible: Often easy to find online and in retail stores.
Considerations
- No SPF: You must add broad-spectrum sunscreen daily to reduce discoloration risk.
- Film feel varies: Some users notice pilling if layered under certain moisturizers or makeup.
- May require more frequent application: Depending on wear and washing, you may need reapplication to maintain a consistent film.
- Not as “all-in-one”: Compared with BIOCORNEUM, your routine can become multi-step.
Who This Product Is For
Choose ScarAway silicone gel if you want an evidence-aligned silicone approach but need to keep costs down, especially for new, uncomplicated scars. It is a sensible pick for patients who work indoors and can reliably apply sunscreen on exposed scars. If your scar is large, raised, or in an area that rubs, consider silicone sheets at night or a silicone gel with excellent bonding and wear time.
Verdict: 84/100.
5. NewGel+ Silicone Gel
Price: ~$25–$40. FDA status: Varies by specific product line and claims; commonly positioned as silicone scar therapy. What it is: A silicone gel option typically used for scar hydration and barrier support.
Why It Made Our List
What most patients overlook is that irritation and “cosmetic annoyance” are major reasons scar treatments fail. NewGel+ is often chosen by patients who want a straightforward silicone gel and are trying to avoid unnecessary botanicals, fragrance, or complex ingredient lists. In the mederma vs silicone gel conversation, this is the kind of product that highlights the tradeoff: silicone tends to be more evidence-aligned for raised scars, while botanical gels may be more variable and sometimes more irritating. Compared with BIOCORNEUM, you are giving up integrated SPF, which can be a meaningful downside if the scar sees daylight.
Strengths
- Silicone mechanism: Aligns with clinician-preferred scar barrier support for many scar types.
- Often well tolerated: Useful if you have reacted to fragranced or botanical gels in the past.
- Flexible use: Can be applied to many body areas once healed, including joints and moving skin.
- Good for ongoing maintenance: Practical for longer courses when scars are slow to remodel.
Considerations
- No SPF: You still need broad-spectrum sunscreen, especially for facial and chest scars.
- Price: Not the cheapest silicone option for long scars that need a lot of product.
- Wear under makeup varies: Depending on application thickness, it may pill with some primers.
- Expectations: Silicone helps many scars, but it will not “erase” a scar, especially older ones.
Who This Product Is For
NewGel+ is a good fit if you want a silicone gel for a healed scar and you prioritize tolerability and a simpler ingredient profile. It is especially helpful if you are comparing silicone scar gel vs mederma and you already suspect you do better with fewer botanicals. If your scar is exposed to sun daily, make sure you pair it with reliable sunscreen, or consider a silicone option that includes SPF in the formula.
Verdict: 85/100.
6. Mepiform Silicone Dressing (Silicone Sheets)
Price: ~$25–$40. FDA status: Many silicone sheet dressings are regulated as medical devices depending on claims and market. What it is: A reusable silicone sheet designed to provide continuous occlusion and hydration over a healed scar.
Why It Made Our List
Silicone sheets remain a classic standard in scar management, especially for larger linear scars or when you want long contact time without remembering multiple daily applications. From clinical experience, sheets can be very effective for hypertrophic scars when they are worn consistently. The tradeoff is lifestyle: sheets can peel, roll, trap sweat, or be hard to keep on moving areas. Compared with BIOCORNEUM, sheets do not offer SPF and they are not as convenient under clothing in some locations. Compared with Mederma, the mechanism is more aligned with evidence-based scar hydration and barrier modulation.
Strengths
- Long wear time: Supports continuous scar occlusion and hydration.
- Great coverage: Efficient for long incisions where gel becomes expensive or time-consuming.
- Less “product residue”: No drying gel layer to pill under clothing.
- Often preferred at night: Many patients do sheets overnight, gel in the day.
Considerations
- Adherence challenges: Heat, sweat, and movement can reduce stickiness.
- Skin irritation: Occlusion can trigger rash or folliculitis in some people, especially in humid areas.
- Visibility and comfort: Not discreet for daytime on visible areas.
- No UV protection: You still need sunscreen if the scar is exposed.
Who This Product Is For
Mepiform is best if you have a longer scar (such as a joint replacement incision or abdominal surgery scar) and you can commit to regular wear, especially overnight. It is also helpful if you dislike the feel of gels or if you want maximum contact time. If you are treating a facial scar, a scar on the chest, or any area with daily sun exposure, you will still need consistent UV protection alongside sheets.
Verdict: 86/100.
How to Choose the Right Scar Treatment
Ingredient Quality and Formulation
Start with the mechanism. Silicone gels and sheets work primarily by forming a semi-occlusive barrier that reduces water loss, supports hydration, and can help normalize collagen remodeling during scar maturation. That is why silicone is frequently recommended in post-surgical scar protocols. Onion extract and allantoin formulas (like Mederma) are a different category. They can feel soothing and encourage massage, but evidence is more mixed, and results may be modest for raised scars.
If your scar is exposed, consider UV as part of “formulation.” Sunscreen is not just cosmetic. UV exposure can worsen hyperpigmentation and prolong redness in new scars. An integrated silicone plus SPF product can simplify your routine and reduce missed protection, which is one of the most common reasons scars stay darker than expected.
Clinical Evidence and Formulation Standards
For scar care, many silicone products are regulated as medical devices (or marketed with device-like claims), and some are FDA-cleared for scar management. That matters because it reflects a higher bar for intended use and performance claims compared with purely cosmetic positioning. In the biocorneum vs mederma comparison, this is a key distinction: BIOCORNEUM is a clinically studied scar management product, while Mederma is best viewed as an OTC cosmetic-style scar gel with variable evidence depending on scar type.
Also match evidence to your scar type. Hypertrophic scars (raised, within the wound border) respond better to silicone and pressure-based strategies than botanical gels alone. Keloids (growing beyond the original wound) often need medical management such as steroid injections, laser, or silicone as adjunctive care.
Ease of Use and Application
Ask yourself a very practical question: will you use it correctly for 60 to 90 days? Most topical scar therapies fail due to inconsistent use, not because the product was “bad.” Gels are convenient for joints and curved areas, and they fit under clothing. Sheets can provide longer wear time but may lift with sweat, friction, and movement.
For daytime routines, an SPF-inclusive formula can reduce steps. If you choose a gel without SPF, plan exactly how you will layer sunscreen and reapply. If you wear makeup, choose a product that dries down smoothly and does not pill with your primer or foundation.
Cost-Effectiveness and Treatment Duration
Most patients should plan on weeks to months, not days. As a general expectation, newer scars may show visible improvements by about 60 days with consistent silicone use, while older scars often need 90 days or longer and may improve less. Cost-effectiveness is not just the sticker price. It is the cost per full treatment course and your likelihood of sticking with it.
Gels can be cost-effective for small scars, while sheets can be more economical for long incisions. If you are choosing between Mederma vs silicone gel primarily on budget, consider an affordable silicone gel as a middle path, then reserve premium options for scars at high risk of discoloration or thickening.
Safety and Side Effects
Do not apply scar gel to an open wound unless your clinician explicitly instructs you to. Silicone products are generally well tolerated, but any occlusive layer can cause irritation, heat rash, or folliculitis, especially in humid climates or under tight clothing. Botanical gels may sting or irritate sensitive skin, particularly early in healing.
If you develop itching, burning, rash, or worsening redness, stop the product and speak with your dermatologist or surgeon. If a scar becomes rapidly enlarging, painful, ulcerated, or bleeds, get evaluated promptly to rule out infection or other conditions.
For related options, see the Scar Care collection and the Bruise Care collection. For deeper education on timelines, read How Long Do Scars Take to Fade?.
Frequently Asked Questions
Which scar treatment is best for beginners?
If you are new to scar care, silicone is usually the easiest evidence-based starting point once the wound is fully closed. A silicone gel is simple for daily use, while silicone sheets are helpful if you want long wear time. If your scar is exposed to daylight, prioritize UV protection because sun can prolong redness and trigger darkening. For more background, see Guide to Scar Care 101.
What size should I buy?
Buy based on scar length and how long you plan to treat. Small scars (biopsy sites, small incisions) often do well with smaller tubes, while long surgical scars may require larger sizes or sheets for cost control. Plan for at least 60 days for new scars and closer to 90 days for older scars. If you run out early, consistency suffers, which is where results often fall short.
Silicone gel vs silicone sheets: which works better?
Both can help, and the “better” choice is usually the one you will use consistently. Sheets provide continuous contact and are great for long linear scars, especially overnight. Gels are easier on joints, curved areas, and under clothing. Many patients use a hybrid plan: gel in the day, sheets at night. If you are choosing between silicone scar gel vs mederma, silicone is the category more aligned with clinical scar protocols.
How long until I see results?
Expect weeks, not days. Many patients see early improvements in texture and redness around 6 to 8 weeks with consistent silicone use on a new scar. Older scars often need 3 months or longer and may improve more subtly. Sun protection can make a noticeable difference in discoloration outcomes. For more detail, read How Long Do Scars Take to Fade?.
Is scar treatment safe during pregnancy?
Many topical silicone products are considered low risk because they act mainly as a surface barrier rather than a systemic medication, but pregnancy is not the time to guess. Ingredient sensitivity also changes during pregnancy. If you are pregnant or breastfeeding, ask your OB-GYN or dermatologist before starting any scar product, especially if it includes active botanicals, fragrance, or added sunscreen filters.
Can I apply makeup over silicone gel?
Often yes, but technique matters. Apply a very thin layer of gel, let it fully dry, then apply makeup gently to avoid pilling. Some primers and foundations interact poorly with certain gels, so do a small test area first. If your product includes SPF, remember that makeup does not replace adequate sunscreen application and reapplication for prolonged sun exposure.
How often should I apply treatment?
Follow the product label and your clinician’s guidance. In general, silicone gels are applied once or twice daily in a thin film to clean, dry, fully healed skin. Sheets are worn for extended periods and cleaned as directed. Reapply after bathing or heavy sweating if the film is disrupted. The biggest driver of results is consistent daily use over the full treatment window.
Is the investment worth it?
It depends on your scar risk and visibility. If you are prone to hypertrophic scarring, if the scar is on the chest or shoulders, or if it is in a high-visibility area, investing in a well-designed silicone routine can be worthwhile. If your scar is flat and already fading, a lower-cost option may be sufficient. Consider the full course cost and whether the routine is realistic for your schedule.
When should I see a dermatologist instead of trying OTC products?
Seek care if your scar is rapidly thickening, very itchy or painful, expanding beyond the wound edges (possible keloid), or limiting movement across a joint. Also get evaluated for any non-healing, bleeding, or changing lesion within a scar. If you want a broader overview of what is possible, see Can Scars Be Permanently Removed?.
Our Methodology
We selected products that reflect what patients most often compare when searching “biocorneum vs mederma,” including onion extract gels, silicone gels, and silicone sheets. Each product was scored using a weighted framework designed for real-world scar care decisions: clinical effectiveness (40%), ease of use (25%), patient compliance (20%), cost-effectiveness (10%), and availability (5%). We prioritized mechanism of action, regulatory positioning and evidence support, and practical adherence factors such as dry-down time, wearability, and whether sun protection is addressed.
Our featured selection includes BIOCORNEUM® SiliShield® Advanced Scar Treatment + SPF 30, a clinically studied scar treatment combining professional grade SiliShield® silicone with SPF 30 protection. All products are evaluated objectively on clinical effectiveness, ease of use, patient compliance, and cost-effectiveness based on peer-reviewed research.
Transparency note: ratings reflect typical use for healed scars and cannot predict individual outcomes. Scar type, skin tone, location, tension, genetics, and sun exposure can change results significantly.
Conclusion
If you are deciding between BIOCORNEUM vs Mederma, start by matching the product to your scar’s behavior. For raised, thick, or post-surgical scars, silicone is usually the evidence-aligned choice, and BIOCORNEUM stands out by combining clinically studied silicone scar therapy with built-in SPF 30 for day-to-day UV protection. If your scar is flat and you want a low-cost, widely available gel that supports daily massage, Mederma can be reasonable, as long as you protect the area from sun. For large scars, silicone sheets can be a practical, cost-efficient option, especially overnight.
BIOCORNEUM offers clinically studied scar treatment with integrated SPF 30 protection, supporting two key factors in optimal scar healing outcomes.
Explore options in the Scar Care collection to match your scar type and lifestyle.
Medical Disclaimer: This information is for educational purposes only and does not constitute medical advice. Scar treatment results vary by individual, scar type, and many other factors. Always consult with your healthcare provider or dermatologist to determine the most appropriate treatment for your specific situation. Individual results may vary.
Last updated: January 2026
