Which chemical peels are best for acne and acne scarring?

If you’ve been managing your acne for a while, you’ll know that your skin goes through so many phases. Some weeks bring active breakouts and oiliness, while others leave your skin feeling drier and more sensitive. Then, there are those calmer periods when things start to settle.

Chemical peels can help support your skin through each of these stages, offering gentle exfoliation and hydration to start or more targeted resurfacing when you’re ready. So, there isn’t just one peel that’s best for acne or acne scarring. The right one for you depends on what your skin needs at any given time. 

Explore chemical peels for acne-prone skin

• Salicylic acid
• Glycolic acid
• Lactic acid
• Mandelic
• Trichloroacetic acid (TCA)
• Cosmelan

Here’s what you need to know about chemical peels for acne-prone skin, including how they work and where each one can fit into your treatment plan.

How do chemical peels support acne-prone skin?

Chemical peels work by creating carefully controlled exfoliation of the skin, using different acids and concentrations as your acne treatment progresses.

When you’re actively breaking out, oiliness, inflammation, and sensitivity can all fluctuate, so treatment needs to be adjusted to how your skin is presenting at the time. Once your skin has settled, we can start paying more attention to any uneven texture or tone left behind.

Active acne

When acne is active, we’re usually focused on calming the inflammation without causing any further irritation. This is where lighter, more superficial peels can gently ease congestion and reduce the build-up that contributes to new breakouts.

If acne is more inflamed, cystic, or beginning to scar quickly, a chemical peel may not be the right place to start. In those cases, we’ll look at the broader treatment plan first.

Acne scarring

At this point, stronger or more targeted peels can help smooth the appearance of shallower texture and scarring. How effective chemical peels are for acne scars largely depends on their depth. For deeper or more established scarring, we may combine peels with other clinical treatments.

Pigmentation

Sometimes what looks like acne scarring is actually post-inflammatory pigmentation. These brown or tan marks appear when inflammation from a breakout prompts the skin to produce extra pigment as it heals. Here, our focus is on gradually clearing that excess pigment without triggering more inflammation in the process.

What types of chemical peels are formulated for acne-prone skin?

Each chemical peel uses a different acid or combination of ingredients, and its strength and duration can be adjusted based on your skin’s current condition. These factors all affect how the peel works and when we’d consider it.

Here’s a quick comparison of the peels we commonly use for acne-prone skin:

Salicylic acid peel for active acne

Salicylic acid is an oil-soluble beta-hydroxy acid (BHA), which means it’s oil-soluble. It helps clear oil and dead skin cells that contribute to congestion and has anti-inflammatory properties to calm active breakouts.

Can salicylic acid fade acne scars? No, not on its own. Its main role is managing congestion and active acne rather than remodelling established scarring.

Possible side effects and recovery: Salicylic acid can be a little drying, particularly if your skin is already sensitive or dehydrated. You may notice some temporary redness, dryness, or light flaking afterwards, along with a brief sting or warmth during treatment. Downtime is usually minimal, although your skin may feel a little more sensitive for a day or two.

Glycolic acid peel for congestion & post-acne marks

Glycolic acid is a water-soluble alpha-hydroxy acid (AHA) derived from sugar cane. Its small molecules allow it to penetrate the outer layers of the skin more easily, loosening the bonds between dead skin cells so they can lift away from the surface. 

By clearing away that surface build-up, glycolic acid can help reduce congestion and keep pores clearer. As breakouts settle, the same exfoliating action can also help reduce the appearance of post-acne pigmentation and smooth more superficial texture.

Possible side effects and recovery: Because it works mostly at the surface, downtime is usually fairly light. You may notice mild redness, tightness, or light flaking for a day or two afterwards, along with some warmth or tingling during treatment.

Lactic acid peel for sensitivity and hydration

Lactic acid is another alpha-hydroxy acid (AHA), but its larger molecules penetrate more slowly than glycolic acid. It also has humectant properties, helping draw moisture into the skin while it exfoliates. This gentler, more hydrating action can be useful when acne-prone skin is also feeling dry, dehydrated, or sensitive. It still supports light exfoliation and mild congestion, but without irritating skin that’s already feeling reactive. 

Possible side effects and recovery: Lactic acid is one of the gentler peels we use, with little to no downtime for most people. Some temporary sensitivity or mild irritation is possible, but this usually settles quickly.

Mandelic acid peel for sensitive or PIH-prone skin

Like lactic acid, mandelic acid is an AHA made up of larger molecules, so it penetrates the skin more gradually than smaller acids. That slower action can make it a gentler option when acne-prone skin is also sensitive, reactive, or more prone to post-inflammatory pigmentation.

It may also be combined with salicylic acid when we want to address congestion while keeping the overall exfoliation more measured.

Possible side effects and recovery: Recovery is generally light, although temporary sensitivity or mild irritation can still occur depending on the strength used and how your skin responds.

TCA peel for post-acne scarring and pigmentation

TCA (trichloroacetic acid) is a stronger peel that can work at different depths depending on the concentration used. It encourages the controlled shedding of the outer layers while triggering your body’s natural repair response beneath the surface. This supports collagen remodelling for shallower acne scars, as well as superficial pigmentation and uneven texture.

Can you use a TCA peel on active acne? It’s not usually where we start. When the skin is already inflamed or reactive, a deeper peel can add more irritation.

Possible side effects and recovery: TCA involves more downtime than superficial peels. Depending on the concentration used, you may notice redness, tightness, and more visible peeling over the first few days. Some flaking can continue as the skin settles, and the treated area may temporarily look darker before it clears.

Cosmelan peel for post-acne pigmentation

Cosmelan works differently from a traditional acid peel. It combines exfoliating and pigment-regulating ingredients to help reduce existing marks while also slowing excess melanin production, which can cause them to linger or return. That’s why it’s best suited to post-acne pigmentation that is more persistent or widespread. It can also be used across a range of skin tones.

The mask is applied in-clinic and left on for around 8 to 10 hours before you wash it off at home. From there, you’ll continue with prescribed homecare, including the Cosmelan 2 cream, for around six months, with the exact timeline adjusted to how your skin responds.

Possible side effects and recovery: You may notice redness, tightness, dryness, sensitivity or flaking in the first few days. These usually ease gradually, although your skin can stay a little more sensitive while you continue the homecare phase.

Chemical peels for acne before and after

These before and after images show how chemical peels can fit into different acne treatment journeys. Each result reflects an individual client’s skin and treatment plan, so outcomes will naturally vary from person to person.

Acne

Acne scars

Post-acne pigmentation

Ready to find the right peel for your skin?

There’s a lot to consider with acne-prone skin, and you don’t need to have all the answers before you talk to us.

During your consultation, we’ll look at how your acne is currently presenting, how sensitive or reactive your skin is, what you’ve already tried, and what you’d like help with. From there, we can guide you towards the peel, or combination of treatments, that makes the most sense for you and your skin.

If you’re not sure where to start, get in touch with one of our clinicians.