The Three Treatments Compared
House of Aesthetics offers three distinct approaches to acne scar improvement: chemical peels, standard microneedling, and Morpheus8 RF microneedling. Each works at a different level and is suited to different scar severities.
Chemical Peels: Resurfacing from the Top Down
Chemical peels use controlled application of an acid solution to remove damaged outer skin layers. As the skin heals, fresher tissue replaces what was removed. At House of Aesthetics, we use BioRePeel and Tebiskin peels, which offer controlled exfoliation with minimal downtime.
How they work for acne scars: Superficial peels target the epidermis only. Medium-depth peels reach into the papillary dermis. This makes them effective at improving post-inflammatory hyperpigmentation (the dark marks left after a spot heals), smoothing minor textural irregularities, and giving the skin a more even, refined appearance.
Where chemical peels fall short: Because even medium-depth peels rarely penetrate beyond the papillary dermis, they have limited ability to restructure the deeper collagen damage that defines most atrophic acne scars. A study published in the Journal of Clinical and Aesthetic Dermatology compared microneedling to 35 per cent glycolic acid peels for acne scarring and found that 73 per cent of microneedling patients achieved significant improvement, compared to 33 per cent in the chemical peel group. Chemical peels are also associated with a higher risk of post-inflammatory hyperpigmentation in darker skin tones (Fitzpatrick IV to VI), which limits their suitability for a significant proportion of patients.
Best suited for: Mild, superficial scarring. Post-inflammatory discolouration. Overall skin texture refinement. Maintenance between deeper treatments. Chemical peels are also highly effective as a complementary step alongside microneedling; a 2025 systematic review and meta-analysis found that combining the two approximately doubled the odds of achieving 50 to 75 per cent clinical improvement compared to either treatment alone.
Standard Microneedling: Collagen Induction from Within
Microneedling uses a device fitted with fine, medical-grade needles to create controlled micro-injuries across the skin’s surface. These tiny punctures trigger the body’s wound-healing response, prompting new collagen and elastin production in the treatment area. At House of Aesthetics, we use the Dermapen and Imedpen devices, both of which offer precise, adjustable needle depth.
How it works for acne scars: By penetrating into the dermis, microneedling stimulates the fresh collagen production needed to fill in depressed scars and smooth out textural irregularities. The controlled injury also disrupts the fibrous bands that tether rolling scars downward. A meta-analysis published in the Journal of Population Therapeutics and Clinical Pharmacology found that microneedling demonstrated superior efficacy for atrophic acne scars compared to both chemical peels and laser treatments, with improvement maintained for up to 12 months.
Where standard microneedling reaches its limit: Standard microneedling relies on mechanical injury alone. The needles create channels and trigger healing, but they do not deliver thermal energy to the deeper dermal layers. This means the collagen remodelling response, while effective, is less intense and less deep than what RF-enhanced microneedling can achieve. For shallow rolling scars and mild boxcar scars, this may be sufficient. For deeper or more established scarring, the results can plateau.
Best suited for: Mild to moderate rolling and shallow boxcar scars. Patients seeking gradual improvement over multiple sessions. Those with darker skin tones who want to minimise hyperpigmentation risk (microneedling keeps the epidermis partially intact, offering a strong safety profile across all Fitzpatrick skin types). Budget-conscious patients looking for effective collagen induction at a lower price point than RF microneedling.
Morpheus8 RF Microneedling: Structural Remodelling at Depth
Morpheus8 combines the mechanical collagen induction of microneedling with radiofrequency (RF) energy delivered through gold-tipped, insulated needles. This dual mechanism is the key differentiator. While the needles create the same controlled micro-injuries as standard microneedling, the RF energy simultaneously heats the surrounding dermal tissue to a precise, controlled temperature. This thermal effect triggers a more intense wound-healing cascade, producing greater collagen contraction and more extensive neocollagenesis than mechanical injury alone.
How it works for acne scars: The Morpheus8 device penetrates to an adjustable depth of up to 4mm for facial treatments (and up to 7 to 8mm for body applications), reaching well into the reticular dermis where acne scar tissue originates. The RF energy delivered at depth does three things that standard microneedling cannot: it contracts existing collagen fibres for immediate tissue tightening, it triggers a more robust wave of new collagen production over the following months, and it remodels the disorganised scar tissue structure itself.
The clinical evidence supports this distinction. A 2025 retrospective review published in the Aesthetic Surgery Journal examined 356 patients treated with three different modalities for acne scarring. The Morpheus8 fractional RF microneedling group showed a relapse rate of just 24 per cent at three-year follow-up, compared to 67 per cent for the isotretinoin group and 75 per cent for the ablative laser group. The same study reported 50 to 70 per cent improvement in atrophic scar texture and depth after three sessions, with no severe side effects across all skin types (Fitzpatrick I to VI).
Separately, clinical trials using Global Aesthetic Improvement Scales report that approximately 85 per cent of RF microneedling patients rate their results as “very much improved” or “much improved”, with objective measurements showing a 25 to 35 per cent reduction in pore size alongside the scar improvement.
Best suited for: Moderate to severe acne scarring, including deeper rolling scars, boxcar scars and mixed scar types. Patients who have tried standard microneedling or peels without adequate improvement. Those seeking the most significant structural remodelling available without surgical intervention. All skin tones, including Fitzpatrick IV to VI, due to the insulated needle design that spares the epidermis.
Skip to content
