Whether a peel or microneedling is the better choice depends on one thing first: is it a mark or a scar? Marks are flat changes in colour. Scars have depth. The two respond to different treatments, and most people with a history of acne have some of both.
Marks and scars are different problems.
- Brown marks are post-inflammatory hyperpigmentation: extra pigment left behind by a spot. They are flat and common in every skin tone, and they tend to be darker and slower to fade in Fitzpatrick IV to VI skin.
- Red or purple marks are flat too. They often fade with time and sun protection, and we will tell you honestly if a treatment is worth it.
- Atrophic scars have depth: rolling scars with soft edges, boxcar scars with sharper edges, and narrow, deep ice pick scars.
- Raised scars and keloids are a different path again and are not treated with peels or microneedling.
A quick test at home: look at the area in side light and gently stretch the skin. A flat mark stays visible as colour; a scar shows as a shadow or a dip.
What a chemical peel does.
A chemical peel applies an exfoliating acid for a set time so dead surface cells shed more evenly. It works on the surface: tone, flat marks, congestion and fine texture. Downtime runs from little to none for a lactic or mandelic peel to several days of visible peeling for a Jessner blend. At Melatone™ single peels are from £110, and a course of three is paid upfront, from £297.
What microneedling does.
Microneedling uses fine needles to make thousands of tiny, controlled channels in the skin. The skin's repair response to those channels is what can improve the look of texture and scars with depth over a course. It does not target pigment with heat, which is one reason it is often chosen for darker skin. Microneedling at Melatone is from £99.99; the protocols for acne scars and their prices are on our acne scar treatment page.
What the head-to-head trials show.
- Microneedling or a glycolic peel, for scars. In 60 people with Fitzpatrick IV to VI skin and atrophic acne scars, treated every two weeks for 12 weeks, 73 percent of the microneedling group improved by more than one scar grade, against 33 percent of the group treated with 35% glycolic peels (Ishfaq et al., 2022).
- Both together. In a study in Indian skin (types III to IV) of people with rolling or boxcar scars and post-acne pigmentation, adding 35% glycolic peels between microneedling sessions improved scars and reduced post-acne pigmentation, without extra side effects (Sharad, 2011).
Both studies are small and single-centre. Read together, they point the same way as clinical experience: microneedling for depth, peels for the surface, and a combination when you have both. Individual results vary.
Darker skin tones: what changes.
Any treatment that inflames the skin can leave post-inflammatory hyperpigmentation, and a 2024 systematic review found the evidence for treating it in skin of colour weaker than it should be (Mar et al., 2024). So in Fitzpatrick IV to VI skin we prime the skin for two to four weeks before microneedling, patch test before peels, start gently and insist on SPF 50 through the healing window. Active, inflamed acne is treated first: we do not needle or peel over active spots.
Which one for you. A quick guide.
- Flat brown marks, no depth: a course of gentle peels, usually mandelic, with daily SPF.
- Rolling or shallow boxcar scars: a course of microneedling, with peels between sessions if marks sit alongside.
- Deep ice pick or deep boxcar scars: often need procedures in a dermatology setting, and we will say so and refer you.
- Active breakouts: get the acne under control first; that is the step that prevents the next scars.
Frequently asked questions
Is microneedling or a chemical peel better for acne scars?
For scars with depth, such as rolling and boxcar scars, microneedling is usually the better fit. In a trial of 60 people with Fitzpatrick IV to VI skin, 73 percent of the microneedling group improved by more than one scar grade against 33 percent of the glycolic peel group. Peels suit flat marks and surface texture.
Which is better for dark marks after acne?
Flat dark marks are pigment, not scars, so a course of gentle peels, usually mandelic, alongside daily sun protection and a pigment-balancing routine, is the usual starting point. Microneedling is for depth.
Can I have a chemical peel and microneedling together?
Not on the same day, but they can be planned as one course, spaced apart. A trial in Indian skin found that adding glycolic peels between microneedling sessions improved scars and post-acne pigmentation without extra side effects.
Which is better for darker skin?
Both can be used in Fitzpatrick IV to VI skin with the right protocol. Microneedling does not target pigment with heat, and superficial peels are chosen and paced for the skin. Priming, a patch test, a gentle start and SPF 50 matter more than the choice between them.
How much downtime is there?
A lactic or mandelic peel has little to no downtime, perhaps a day or two of light flaking. Microneedling usually means a day or two of redness, like mild sunburn. Stronger peels, such as the Jessner blend, peel visibly for several days.
How many sessions will I need?
Peels are usually a course of three, two to four weeks apart. Microneedling for scars usually takes a course of three or more, with results building over the course. Individual results vary.
References (Harvard)
- Ishfaq, F. et al. (2022) 'A comparison of microneedling versus glycolic acid chemical peel for the treatment of acne scarring', Journal of Clinical and Aesthetic Dermatology, 15(6), pp. 48 to 52. PubMed: 35783564.
- Sharad, J. (2011) 'Combination of microneedling and glycolic acid peels for the treatment of acne scars in dark skin', Journal of Cosmetic Dermatology, 10(4), pp. 317 to 323. PubMed: 22151943.
- Mar, K. et al. (2024) 'Treatment of post-inflammatory hyperpigmentation in skin of colour: a systematic review', Journal of Cutaneous Medicine and Surgery, 28(5), pp. 473 to 480. PubMed: 39075672.