That Scar Cream May Not Be Doing What You Think—Doctors Reveal What Actually Works and When It’s Too Late to Wait

SINGAPORE — From silicone sheets and petroleum jelly to Vitamin E creams, retinoids, steroid injections and expensive laser procedures, consumers have no shortage of products promising to make scars less noticeable.

But dermatologists say there is one uncomfortable reality behind the booming scar-treatment market: no treatment can simply make every scar disappear.

What doctors can often do, however, is make scars flatter, smoother, less discoloured and considerably less conspicuous — particularly when the right treatment is used on the right type of scar at the right stage of healing.

And some of the cheapest options may have better evidence behind them than many heavily marketed creams.

Why Some Wounds Barely Leave a Mark — While Others Do

A scar is essentially evidence of the body's repair process.

When an injury penetrates deeply enough into the skin, the body produces new tissue, particularly collagen, to close the wound and rebuild the damaged area.

Dr Suzanne Cheng, a senior consultant at Singapore's National Skin Centre, told CNA Lifestyle that deeper injuries extending into the dermis have a greater likelihood of producing scars.

How the injury happens also matters.

A clean surgical incision generally has a better chance of producing a relatively neat scar than a jagged cut, crush injury or burn. Wounds that gape or heal without their edges being properly approximated can also produce more noticeable marks.

Location matters, too.

The face tends to heal comparatively well because of its strong blood supply, while areas including the chest, shoulders and legs may be more susceptible to noticeable scarring.

Skin characteristics can influence the final result as well. People with darker skin tones may be more prone to post-inflammatory hyperpigmentation and certain raised scars.

The Scar You Have Determines the Treatment You Need

One reason there is no universal "scar remover" is that scars are not all biologically identical.

Atrophic scars are depressed or sunken areas caused by tissue and collagen loss. They are frequently associated with acne and chickenpox. Acne scars can appear as narrow ice-pick scars, broader boxcar depressions or rolling indentations.

Hypertrophic scars, meanwhile, are raised and firm but remain within the boundaries of the original injury.

Keloids behave differently. They can grow beyond the borders of the initial wound and may continue enlarging. They can also become itchy, painful or uncomfortable.

There are also contracture scars, often associated with major burns, which can tighten the skin and potentially interfere with movement.

That distinction is critical because something that helps a raised scar may accomplish very little for a deep, depressed acne scar.

The American Academy of Dermatology similarly advises having the scar type correctly identified because different scars require different treatments, while a person's age and the scar's age can also influence the options likely to work.

Acne Picking Can Turn Inflammation Into Permanent Damage

Acne is particularly notorious for leaving scars.

Severe or prolonged inflammation from nodules and abscesses can destroy collagen beneath the skin. Fibrous tissue may then pull the skin downward, creating permanent depressions.

Picking and squeezing inflammatory acne can make that damage worse.

Chickenpox can produce a similar problem when inflammation reaches deeper layers of skin. Scratching — or a secondary bacterial infection — can further injure tissue and increase the chances of lasting pockmarks.

This means one of the most effective anti-scar strategies can happen before a scar exists: controlling inflammatory acne early and avoiding unnecessary trauma to lesions.

There's a Window When Scars May Be Easier to Influence

Scar formation doesn't end when a cut closes.

Healing progresses through overlapping inflammatory, proliferative and remodelling phases. During remodelling, collagen continues to reorganise and strengthen for months.

A relatively new scar may remain red, raised, itchy, tender or visibly change over time.

According to the specialists interviewed by CNA, scar maturation commonly takes roughly a year, although the process varies considerably between wounds and individuals.

This matters because treatments introduced while the scar is still actively remodelling may have more opportunity to influence its final appearance.

An old scar is not necessarily untreatable.

Modern dermatology can use approaches including fractional lasers, radiofrequency microneedling, subcision, fillers and corticosteroid injections depending on the scar involved.

The realistic objective, however, is improvement rather than erasure.

Silicone Has Some of the Strongest Evidence Among OTC Options

Among readily available scar products, silicone gel and silicone sheets stand out.

They are most commonly used for raised scars, including hypertrophic scars and keloids, and may help reduce characteristics such as thickness, redness, stiffness and itching.

The American Academy of Dermatology also lists silicone gel sheets and ointments as options for raised scars and notes that silicone sheets are used only after the wound has closed.

Consistency matters. Silicone products may need to be used daily for months rather than occasionally for a few days.

They are not magic patches, however, and they will not produce the same result for every scar.

Petroleum Jelly Has a Different Job

Petroleum jelly is another inexpensive product that can be useful — but largely because of what it does while a wound is healing.

Keeping an appropriate superficial wound moist can help prevent excessive drying and scab formation and support normal healing.

The American Academy of Dermatology similarly recommends moist wound care as part of strategies to minimise scarring.

That doesn't mean petroleum jelly can erase a mature scar.

Its greatest value is generally during wound healing rather than months or years afterward.

Vitamin E's Reputation Is Bigger Than Its Evidence

Vitamin E is perhaps one of the best-known home remedies for scars.

Its popularity is understandable: Vitamin E has antioxidant properties, leading to claims that applying it directly to scars can improve healing and reduce redness.

But clinical evidence for meaningful scar improvement remains weak and inconsistent.

The dermatologists interviewed by CNA noted that studies have found little or no improvement in some cases. More importantly, topical Vitamin E can cause allergic contact dermatitis in some users.

That irritation can potentially make an already troublesome area worse.

In other words, a product being widely associated with scar treatment does not necessarily mean it has strong clinical evidence behind it.

What About Retinol, Acids and Aloe Vera?

Retinoids can increase skin-cell turnover and influence collagen production, which makes them useful in several dermatological conditions.

But they should not be placed on an open wound.

They may improve superficial texture or pigmentation in some situations, but they cannot simply refill deep atrophic scars.

Chemical exfoliants such as AHAs and BHAs can similarly improve surface texture and post-inflammatory pigmentation after skin has completely healed, but they generally do not penetrate deeply enough to reconstruct major dermal scars.

Aloe vera may soothe and moisturise healing skin, but evidence that it substantially remodels established scars is limited.

These products therefore shouldn't automatically be treated as substitutes for therapies with stronger evidence.

Raised Keloids May Need Medical Treatment

When a scar becomes significantly raised, painful, itchy or continues growing beyond the original injury, over-the-counter treatment may not be enough.

Dermatologists frequently use corticosteroid injections for hypertrophic scars and keloids.

The American Academy of Dermatology says corticosteroid injections can reduce the size of raised scars and keloids and alleviate symptoms such as pain and itching. Multiple treatments are commonly required.

Other options can include cryotherapy, laser or light treatment and combinations of therapies.

Keloids are particularly challenging because they can recur even after treatment.

Lasers Can Improve Scars — But They Don't Delete Them

Laser treatment is increasingly important in scar management.

Depending on the technology and scar involved, lasers can reduce redness, improve texture, decrease itching or discomfort and make certain scars less visible.

For some acne scars, resurfacing procedures encourage new collagen formation as the treated skin heals.

But the American Academy of Dermatology stresses an important limitation:

Laser treatment cannot make a scar completely disappear.

Results also depend on factors including scar type, skin tone, laser technology, operator expertise and aftercare.

Even Plastic Surgery Doesn't Literally Remove a Scar

Scar revision surgery is sometimes misunderstood as scar removal.

Any surgical incision creates another wound — meaning another scar will form.

The objective is instead to replace an unfavourable scar with one that heals in a less conspicuous position or with a flatter, smoother and more natural contour.

Doctors may reduce tension, reposition tissue or alter the orientation of the scar to help it blend into surrounding skin.

So even sophisticated plastic surgery is fundamentally about scar revision, not scar deletion.

The Bigger Lesson: Don't Treat Every Scar the Same Way

The increasingly crowded scar-treatment industry makes it tempting to search for one miracle cream, patch or procedure.

Medicine offers a more complicated answer.

A fresh surgical scar, deep acne depression and expanding keloid are fundamentally different problems and shouldn't automatically receive the same treatment.

For a newly healed wound, proper wound care and — when appropriate — silicone may be enough.

For an established keloid, injections or other specialist treatment may be necessary.

Deep acne scars may require procedures such as subcision, microneedling, resurfacing or combination therapy rather than topical creams alone.

And some scars will gradually become less noticeable simply with time.

The most important expectation may therefore be the simplest one:

Modern medicine can often make scars significantly less noticeable. It cannot promise to erase the fact that an injury happened.

People should seek medical attention if a scar becomes increasingly painful, swollen, warm, drains pus, restricts movement, or continues growing. A dermatologist can also determine the scar type before money is spent on treatments unlikely to address the underlying problem.