Atrophic · hypertrophic · keloid · contracture · colour

Scar types and treatment options

Scars are not one condition. Height, depth, tethering, colour, age, symptoms and the risk of abnormal healing determine whether resurfacing, release, camouflage, specialist injections or referral is the more sensible route.

Four-part Idalia diagram showing ice-pick, boxcar, rolling and raised acne-scar patterns
The diagram shows common acne-scar patterns. The guide below also covers fine-line, surgical, burn, stretch-mark and colour-difference scars.

What it means

First identify height, tethering, colour and function

A treatment that helps a shallow depressed scar may aggravate a raised scar. A procedure that releases a tether cannot correct a pale colour difference, and pigment camouflage cannot flatten or untether the skin. Mixed scars normally need staged treatment.

Scar family map

What each broad scar type usually needs

Scar maturity, skin tone, medical history and previous treatment still change the plan.

Scar familyTypical appearanceUsual treatment direction
Fine-line or mature surgical scarInitially pink or raised, then often flatter and paler with time.Time, sun protection, moisturising and massage when medically advised; silicone may help selected immature or raised scars. Texture, redness or colour can be reviewed after healing is stable.
Atrophic or depressed scarSkin sits below the surrounding surface. Acne examples include ice-pick, boxcar and rolling scars; surgical scars may also be tethered.Microneedling or RF microneedling for selected texture, subcision for suitable tethers, focal chemical techniques for selected narrow scars, and laser or surgical referral where appropriate.
Hypertrophic scarRaised and firm but remains within the boundary of the original wound; it may flatten over time.Silicone or pressure, specialist steroid treatment, laser for selected redness, and sometimes intralesional 5-FU or surgery as part of a recurrence-aware medical plan.
Keloid scarRaised growth extends beyond the original wound and may itch, hurt or continue enlarging.Dermatology or plastic-surgery assessment. Combination management may include steroid, 5-FU, cryotherapy, laser, pressure or surgery with recurrence prevention. Cosmetic needling or tattooing may provoke further growth.
Contracture or burn scarTightened tissue can restrict movement or distort nearby anatomy.Burn, plastic-surgery, occupational-therapy or physiotherapy services take priority; treatment may involve splinting, pressure, laser or reconstructive surgery.
Stretch marksEarly red, purple or brown lines that commonly mature to paler, slightly depressed bands.They can soften and become less noticeable but are permanent. Selected microneedling, RF microneedling, laser or topical medical routes may help depending on stage and skin tone.
Mainly colour differenceFlat red, brown, grey, darker or paler mark with little texture change.Treat active inflammation first, use sun protection, then consider pigment/redness management, skin camouflage or medical micropigmentation for a stable mature scar.

How the named treatments match

TreatmentMost relevant toWhat it cannot do or key caution
SubcisionSelected tethered rolling or depressed scars where fibrous bands pull the surface down.It does not resurface ice-pick openings, remove colour or treat raised scars. Bruising, bleeding, haematoma, nerve or vessel injury and incomplete release are possible.
Chemical peel or focal chemical techniqueSelected superficial texture and post-inflammatory colour; focal TCA CROSS may be used medically for certain narrow deep acne scars.A general peel does not release a tether or flatten a keloid. Acid strength, depth and skin tone affect burn, pigment and scarring risk; focal high-strength techniques are not DIY treatments.
MicroneedlingSelected shallow atrophic scars, texture and mature stretch marks.It cannot release a firm tether by itself. Avoid active infection or inflamed acne; keloid history and pigment risk need careful assessment.
RF microneedlingSelected atrophic acne scars, texture and mild laxity where controlled needle-delivered heat may add remodelling.It is not simply “stronger microneedling”. Device, insulation, depth and energy matter; burns, fat loss, pigment change and new scarring are possible. This remains a future or referral route until Idalia confirms its device and protocol.
PMU or medical micropigmentationCamouflage of a stable, mature, flat scar with a persistent colour difference.It does not flatten, raise or untether tissue. Colour can shift or fade, repeat sessions may be needed, and infection, allergy or abnormal scarring are possible. Specialist assessment is essential.
Silicone, pressure or specialist injectionRaised hypertrophic or keloid scars.These are different from treatments for depressed scars. Prescription injections and pressure protocols sit with an appropriately qualified medical/scar service.
Laser or surgerySelected redness, texture, deep or complex scars, contracture and cases needing reconstruction.Downtime and pigment risk vary widely. Excision alone can recur—especially in keloids—so specialist combination planning matters.

The “5-FU injection” you may have heard about

It is probably intralesional 5-fluorouracil. 5-FU is an anti-metabolite medicine that suppresses fibroblast activity and collagen production; it is used by some specialists for hypertrophic and keloid scars, often with a corticosteroid. It is not a collagen-blocking beauty injection, not a treatment for depressed scars and not suitable for self-use. Protocols vary and risks include injection pain, ulceration, superficial tissue damage, infection and pigment change.

When to pause cosmetic treatment

  • The wound is not fully closed or the scar is hot, swollen, painful, draining or rapidly changing.
  • There is active acne, eczema, infection or another inflammatory condition across the treatment area.
  • There is a personal or strong family history of keloids, poor healing or significant post-inflammatory pigment change.
  • The scar restricts movement, follows a major burn, crosses a joint or is causing significant pain or functional difficulty.

A realistic treatment goal

Scar treatment aims to make a scar flatter, softer, more mobile, more comfortable, closer in colour or less noticeable. Complete removal is not a realistic promise, and mixed scars usually improve through a sequence rather than one procedure.

Further reading

From education to treatment

What is the best acne-scar treatment in Dudley?

Rolling, boxcar, ice-pick, hypertrophic and keloid scars behave differently. Idalia matches appropriate options such as subcision, microneedling, selected peels or regenerative-style support to the scar type, while referring raised or medically complex scars when needed.

Explore acne-scar treatments in Dudley