# TCA Peel Strengths (15%, 25%, 35%): Depth, Results and Recovery

> How trichloroacetic acid (TCA) peel strengths differ, what each treats, recovery day by day, risks for darker skin, and why higher strengths belong in a clinic.

Canonical: https://antiagingcare.org/blog/tca-peel-15-25-35-medium-depth
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Author: Anti Aging Care Editorial Team
Published: 2025-09-24
Updated: 2026-10-24
Category: Treatments

Trichloroacetic acid (TCA) peels range from superficial to medium depth depending on concentration and technique. The short answer: lower strengths treat dullness and mild pigment; around 35% (often combined with another agent) reaches medium depth for sun damage, fine wrinkles and some scars, with about a week of peeling. Higher strengths should be done by experienced clinicians, especially on darker skin.

## Strength guide

| Strength | Typical depth | Common uses | Downtime |
|---|---|---|---|
| 10 to 15% | Superficial | Dullness, mild pigment | A few days of flaking |
| 20 to 25% | Superficial to light-medium | Pigment, fine lines | Several days |
| 35% (often with Jessner's or glycolic) | Medium | Sun damage, wrinkles, some scars | About a week |
| Focal high strength (TCA CROSS) | Spot treatment | Icepick scars | Days |

Depth also depends on skin preparation, number of coats and skin type, not just percentage. A review describes chemical peels as useful office tools with careful patient selection ([Truchuelo et al., *Actas Dermosifiliogr*, 2017](https://pubmed.ncbi.nlm.nih.gov/27931952/)), and an acne scar review lists TCA among treatments with very good results ([Chilicka et al., *J Clin Med*, 2022](https://pubmed.ncbi.nlm.nih.gov/35628870/)).

## Recovery for a medium-depth TCA peel

| Day | What to expect |
|---|---|
| 0 to 1 | Stinging, redness, tightness |
| 2 to 3 | Skin darkens and tightens |
| 3 to 7 | Peeling and flaking |
| 7 to 10 | New pink skin; makeup when healed |
| Weeks | Redness fades; strict sun protection |

## Risks

- Post-inflammatory hyperpigmentation, more likely in darker skin ([Davis and Callender, *J Clin Aesthet Dermatol*, 2010](https://pubmed.ncbi.nlm.nih.gov/20725554/))
- Infection or cold sore flare (antivirals are often prescribed)
- Prolonged redness
- Scarring with deeper peels or poor technique

## Darker skin

Lower concentrations and pre-treatment are usually advised; a 2025 study examined sequential glycolic acid and TCA peels in skin of color ([Maruma et al., *Int J Womens Dermatol*, 2025](https://pubmed.ncbi.nlm.nih.gov/40620441/)). Choose a provider experienced with your skin type.

## Why not at home?

High-strength TCA sold online can burn and scar. Leave medium-depth peels to professionals.

## Aftercare

Gentle cleansing, bland moisturizer or ointment as instructed, no picking, and broad-spectrum sunscreen ([AAD: sunscreen FAQs](https://www.aad.org/public/everyday-care/sun-protection/shade-clothing-sunscreen/sunscreen-faqs)).

## How often do complications happen?

One of the largest published case series reviewed 923 TCA peels done over almost 20 years in patients with light and dark skin, using a careful layer-by-layer technique. Complications were uncommon:

| Complication | Rate |
|---|---|
| Persistent hyperpigmentation | 5.9% |
| Mild visible blood vessels | 0.3% |
| Herpes (cold sore) flare | 0.2% |
| Staph infection | 0.2% |
| Hypopigmentation | 0.1% |

Source: [Fanous and Zari, *JAMA Facial Plast Surg*, 2017](https://pubmed.ncbi.nlm.nih.gov/28097306/). This was one surgeon group's experience, not a controlled trial, so results elsewhere may differ. The most common problem, darkening, is also the main concern for people with darker skin. It's a reason to ask about pre-treatment and whether a lighter peel would do the job.

## Frequently asked questions

**How often can I get a TCA peel?** Superficial peels every few weeks; medium-depth peels months apart.

**Does TCA help acne scars?** Yes, particularly as TCA CROSS for icepick scars.

**Is a 35% TCA peel painful?** It stings during application; providers manage discomfort.

_This article is for educational purposes only and is not medical advice. Talk to a board-certified dermatologist about your situation._

## Sources

- Truchuelo M et al. Chemical peeling: a useful tool in the office. *Actas Dermosifiliogr*. 2017. [PubMed](https://pubmed.ncbi.nlm.nih.gov/27931952/)
- Chilicka K et al. Methods for the improvement of acne scars: a review. *J Clin Med*. 2022. [PubMed](https://pubmed.ncbi.nlm.nih.gov/35628870/)
- Davis EC, Callender VD. Postinflammatory hyperpigmentation. *J Clin Aesthet Dermatol*. 2010. [PubMed](https://pubmed.ncbi.nlm.nih.gov/20725554/)
- Maruma F et al. Sequential high concentration glycolic acid and trichloroacetic acid chemical peels. *Int J Womens Dermatol*. 2025. [PubMed](https://pubmed.ncbi.nlm.nih.gov/40620441/)
- American Academy of Dermatology. [Sunscreen FAQs](https://www.aad.org/public/everyday-care/sun-protection/shade-clothing-sunscreen/sunscreen-faqs)