Most self-harm scars never vanish entirely, but they do change substantially over time, often fading to a point where they are far less noticeable. Superficial scratches that only damage the outermost layer of skin can resolve within weeks to months, sometimes leaving no visible trace at all. Deeper wounds that penetrate into the dermis produce scars that persist for years, though their color, texture, and thickness continue to evolve. Research on hypertrophic scars suggests that full maturation can take well over two years, and in some cases longer than three, which is significantly more time than older clinical guidelines assumed.
How Wound Depth Shapes the Timeline
The single biggest factor determining whether a scar fades quickly or lingers for years is how deep the original wound went. Your skin has two main layers: the epidermis on top and the thicker dermis underneath. Injuries confined to the epidermis heal through normal cell turnover and usually leave behind, at most, a temporary discoloration that resolves in a few weeks. Once a wound reaches the dermis, your body repairs it by laying down collagen fibers that are structurally different from the collagen in uninjured skin. Scar collagen is arranged in a more parallel, tightly packed pattern compared to the basket-weave structure of normal skin, and that structural difference is what makes scars look and feel different from surrounding tissue.1PubMed. Collagen morphology in human skin and scar tissue: no adaptations in response to mechanical loading at joints
Self-harm wounds vary widely in depth and method, which means any single timeline is misleading. A shallow cut that barely grazes the dermis might fade to a pale, nearly flat line within six to twelve months. A wound that went deep enough to leave a raised or sunken mark involves more collagen remodeling and will take considerably longer. Some wounds produce hypertrophic scars, meaning they become raised and red but stay within the boundaries of the original injury. These are distinct from keloids, which grow beyond the wound borders and behave differently.2PubMed Central. Hypertrophic scars and keloids: Overview of the evidence and practical guide for differentiating between these abnormal scars
Why Maturation Takes Longer Than You Might Expect
A common piece of advice is that scars “mature” in about a year. The research tells a different story. A retrospective analysis of over 360 hypertrophic scars tracked over five years found that the average time to full maturation was about three years in younger adults, with the youngest group (under 30) averaging roughly 36 months. The study concluded that hypertrophic scars take significantly more time to fully mature than clinicians had previously believed.3Advances in Skin & Wound Care. Duration of Scar Maturation: Retrospective Analyses of 361 Hypertrophic Scars Over 5 Years
Not every self-harm scar is hypertrophic, and flat scars generally reach their final appearance sooner. But the broader lesson holds: scar maturation is a slow biological process, and what your scar looks like at six months is not what it will look like at two or three years. During maturation, redness fades as blood vessels in the scar tissue gradually retreat, thickness decreases as the body remodels excess collagen, and the texture softens. A scar that seems permanent at the one-year mark may continue improving well beyond that.
Age, Skin Tone, and Other Individual Factors
Your age at the time of injury has a surprisingly large effect on how a scar develops. Younger people tend to produce more vigorous collagen responses, which sounds like it should be a good thing, but in practice it often means more pronounced scarring that takes longer to settle. An observational study of scar maturation found that scars rated as “poor” in appearance almost always belonged to volunteers under 30, while the majority of scars rated “excellent” came from people over 55.4PubMed. Maturation of the human scar: an observational study The hypertrophic scar study mentioned above found the same pattern: people over 55 averaged about 23 months to full maturation, compared to roughly 36 months in those under 30.3Advances in Skin & Wound Care. Duration of Scar Maturation: Retrospective Analyses of 361 Hypertrophic Scars Over 5 Years Since most people who self-harm are younger, this means they are in the demographic group where scars tend to be most stubborn.
Skin tone also matters. A prospective analysis using skin-type classifications found that lighter skin tones showed greater reductions in redness over time, while darker skin tones showed less improvement in vascularity and, in some cases, an increase in pigmentation. Black and Hispanic patients in the study had lower odds of favorable pigmentation outcomes.5PubMed Central. Racial and Skin Tone Differences in Scar Maturation: A Prospective Analysis of Aesthetic and Physiological Outcomes Using the Modified POSAS Scale In practical terms, this means people with darker skin are more likely to develop lasting dark or light patches at scar sites, even after the scar itself has flattened and softened. Hyperpigmentation and hypopigmentation can be as visually prominent as the scar texture itself, and they respond differently to treatment.
Sun Exposure Makes Scars Worse
One of the most controllable factors in how a scar heals is sun exposure, and the evidence is clear that UV light during the healing period worsens outcomes. A randomized controlled trial comparing UV-irradiated and non-irradiated scars found that the UV-exposed scars were rated significantly more disfiguring, scored higher on color and infiltration measures, and showed increased pigmentation.6Acta Dermato-Venereologica. Effect of UV Irradiation on Cutaneous Cicatrices: A Randomized, Controlled Trial with Clinical, Skin Reflectance, Histological, Immunohistochemical and Biochemical Evaluations Animal studies support this, showing that UV-exposed wounds developed more fibrosis and hyperpigmentation.7Plastic and Reconstructive Surgery. Ultraviolet Exposure Influences Laser-Induced Wounds, Scars, and Hyperpigmentation: A Murine Study
If you have healing scars you want to minimize, keeping them covered or applying broad-spectrum sunscreen is one of the simplest and most effective steps you can take. Scar tissue lacks the melanin distribution of normal skin, so it is more vulnerable to UV damage, and any resulting pigment change can become permanent. This applies not just to fresh wounds but to scars in the active remodeling phase, which, as we saw, can last years.
Topical Treatments and What the Evidence Actually Shows
Silicone-based products, available as sheets or gels, are the most widely recommended topical treatment for scar management. They have been used in clinical practice for more than three decades, and while the exact mechanism is still debated, their ability to improve scar appearance is largely accepted.8PubMed Central. The Use of Silicone Adhesives for Scar Reduction A systematic review and meta-analysis of randomized controlled trials found that topical silicone gel significantly reduced pigmentation, height, and pliability of scars compared to no treatment, and that gel and sheet formulations performed about equally well.9PubMed Central. Efficacy of topical silicone gel in scar management: A systematic review and meta-analysis of randomised controlled trials Silicone products work best when started early, typically once the wound has fully closed, and used consistently for several months.
Vitamin E, on the other hand, is one of the most popular folk remedies for scars and one of the least supported by evidence. A study of surgical scars found that topical vitamin E either had no effect or worsened appearance in 90% of cases, and a third of patients developed contact dermatitis from it.10PubMed. The effects of topical vitamin E on the cosmetic appearance of scars A systematic review examining all available studies concluded that there is insufficient evidence that vitamin E alone has a meaningful benefit for scar appearance, and that some studies documented adverse effects including rashes and increased itching.11Aesthetic Surgery Journal. The Role of Topical Vitamin E in Scar Management: A Systematic Review There is also evidence specific to children that does not support the practice.12PubMed Central. Vitamin E for treating children’s scars. Does it help reduce scarring? If you have been applying vitamin E to scars, the research suggests you are better off switching to a silicone product or simply moisturizing.
Massage and manual scar therapy are sometimes recommended by physiotherapists and occupational therapists. The idea is that mechanical pressure on scar tissue can influence how cells remodel collagen, not just by physically stretching fibers but by triggering biochemical signaling pathways within the cells themselves.13PubMed Central. Effectiveness of various methods of manual scar therapy Scar massage is low-risk and free, but the evidence base is thinner than for silicone, and results are modest for scars that are already well-established.
Professional Procedures for More Visible Scars
When scars remain conspicuous after home treatment and time, there are several clinical options. Laser therapy is the most studied intervention specifically for self-harm scars. A clinical evaluation of a non-ablative fractional laser used on deliberate self-harm scars found a 27.5% reduction in atrophic (sunken) lesions and a 42.7% decrease in scar height at six months, along with strong correlations to improved quality of life. The procedures were well tolerated with little downtime.14PubMed. Objective evaluation of the efficacy of a non-ablative fractional 1565 nm laser for the treatment of deliberate self-harm scars Pulsed-dye lasers, which target blood vessels in scar tissue, have also been used on hypertrophic and keloid scars. At follow-up, treated areas showed finer, more loosely woven collagen compared to the thick condensed bundles in untreated segments.15JAMA Dermatology. Treatment Response of Keloidal and Hypertrophic Sternotomy Scars: Comparison Among Intralesional Corticosteroid, 5-Fluorouracil, and 585-nm Flashlamp-Pumped Pulsed-Dye Laser Treatments Multiple sessions are usually needed, and results vary by scar type and skin tone.
Microneedling is another option. A review of 58 studies covering nearly 1,850 patients found that microneedling, whether standard or radiofrequency-assisted, produced clinical improvement in scar appearance across a range of scar types including hypertrophic, surgical, and trauma scars. No serious adverse events were reported.16PubMed Central. Microneedling for the Treatment of Scars: An Update for Clinicians Microneedling works by creating controlled micro-injuries that prompt the skin to produce new collagen in a more organized pattern. It is generally less expensive than laser treatment and can be performed in a dermatologist’s office.
For raised scars that resist other treatments, injectable therapies can help. Corticosteroid injections have been a standard approach for decades, flattening raised scars by reducing collagen production. 5-fluorouracil, a chemotherapy agent used in small doses, has shown scar improvement of 50% or more in the majority of treated cases, and combining it with steroid injections produced better results than either alone.17PubMed Central. The Use of Chemotherapeutics for the Treatment of Keloid Scars These injections are typically done in a series over weeks or months.
Surgical scar revision is generally reserved for scars that are wide, deeply indented, or cover large areas. One technique used specifically for self-harm scars involves excising wide scars (those over about 2 mm) down to fat and closing the wound with a subcuticular suture, potentially followed by a split-skin graft for resurfacing.18PubMed Central. Isotopic Split-skin Graft for Resurfacing of Deliberate Self-harm Scars Surgery trades one scar for another, but the replacement scar is typically thinner, flatter, and less recognizable as a self-harm wound. This option involves significant discussion with a plastic surgeon about realistic expectations.
Itching, Tightness, and Other Sensory Changes
Beyond appearance, scars often produce sensations that can be distressing on their own. Itching, tingling, numbness, and pain are all common in healing scar tissue. Research into nerve regrowth in wounds found that nerve density peaks dramatically between two and six weeks after injury. Most nerve-related markers return to roughly normal levels by about 84 days, which is when a scar is considered “mature” at the microscopic level. However, one specific neurotransmitter, substance P, remained elevated at approximately twice its normal density even in mature scars.19PubMed. The reinnervation pattern of wounds and scars may explain their sensory symptoms Substance P is involved in inflammation and pain signaling, which may explain why some scars remain itchy or sensitive long after they look fully healed.
These sensations tend to diminish gradually over months. Moisturizing the scar, wearing soft fabrics over it, and avoiding extremes of temperature can help manage discomfort in the meantime. For persistent itch, silicone sheets sometimes provide relief through gentle compression and hydration of the scar surface.
How Clinicians Track Scar Changes
If you are working with a dermatologist or plastic surgeon, they may use instruments to measure your scar’s progress more precisely than the naked eye can. The main parameters clinicians look at are color (both redness and pigmentation), surface area, height or depth, and pliability.20Plastic and Reconstructive Surgery. Current Tools for Noninvasive Objective Assessment of Skin Scars Techniques like laser Doppler imaging can detect residual blood flow in scar tissue that looks pale to you but is still actively remodeling underneath. Ultrasound can measure scar thickness below the surface. These tools have been shown to be more sensitive than clinical rating by eye alone.21PubMed Central. A Review of Scar Scales and Scar Measuring Devices The practical takeaway is that even when a scar seems to have stopped changing, objective measurements sometimes reveal ongoing improvement. If you feel discouraged because your scar looks the same as it did three months ago, the changes happening beneath the surface may not yet be visible.
The Emotional Weight of Visible Scars
The physical timeline of scar fading is only part of what makes this question so pressing. A scoping review of research on self-harm scars and psychosocial functioning found that shame and stigma were the most consistent themes, identified across the majority of included studies. Scars contributed to psychological distress, a sense of not belonging, difficulties with self-acceptance, and in some cases an increased likelihood of further self-harm.22Psychotherapy and Counselling Journal of Australia. Impacts of Self-Harm Scars on Psychosocial Functioning, Quality of Life, and Recovery in People With Histories of Self-Harm: A Scoping Review Adolescents in therapy have described their scars as shameful and stigmatizing, while simultaneously treating them as “proof” that their depression was real.23PubMed Central. “I can’t escape my scars, even if I do get better”: A qualitative exploration of how adolescents talk about their self-harm and self-harm scars during cognitive behavioural therapy for depression That dual relationship, where scars are both a source of distress and a form of validation, makes the question of whether they will go away more emotionally loaded than a simple timeline can capture.
Some people find that their relationship to their scars shifts as they move through recovery, even if the scars themselves have not changed much. Others find that visible scars act as a barrier to feeling like they have truly moved on. Both responses are common and neither is wrong. What the research does underscore is that scar management is worth pursuing not just for cosmetic reasons but because reducing scar visibility has been linked to improved quality of life and emotional well-being in people with histories of self-harm.
Camouflage and Concealment Options
While waiting for scars to mature or deciding about professional treatment, many people use camouflage strategies. Medical-grade concealer products, sometimes called camouflage makeup, are formulated to be opaque enough to cover scars and color differences on skin. They are waterproof, last through a full day, and come in a wide range of skin tones. Some dermatology departments offer camouflage consultations where a specialist color-matches and teaches application techniques.
Tattooing over scars is another approach that has grown more common. Tattoo artists who specialize in scar cover-ups use techniques adapted to the different texture and ink-uptake characteristics of scar tissue. Scar tissue generally absorbs ink less predictably than normal skin, so results depend heavily on the artist’s experience and the scar’s maturity. Most practitioners recommend waiting until a scar is fully matured, which based on the timelines discussed earlier means at least two years, before attempting a tattoo. Skin-colored tattooing, sometimes called medical or paramedical tattooing, aims to blend the scar into surrounding skin rather than covering it with a design. This approach has been integrated into some burn and trauma scar services as a formal part of care.
Neither camouflage makeup nor tattooing changes the scar itself, but for many people, reducing the scar’s visibility in daily life has a meaningful effect on confidence and social comfort while the slow biological process of maturation continues underneath.