Can You Use AHA and BHA Together?

OK with caution

Yes, but do not layer separate products every day

Stacking AHAs and BHAs raises the irritation risk. No harmful chemical reaction is known, but irritation adds up. Introduce slowly and watch your skin.

This verdict matches the rule in our ingredient conflict checker (rule last checked 2026-09-23).

You can use alpha hydroxy acids (AHAs) and a beta hydroxy acid (BHA, salicylic acid) in the same routine, but layering separate AHA and BHA products every day is a common cause of over-exfoliation. A single product that contains both, or alternating days, is gentler.

By AcneRid Editorial Team Published

Medical review pending 6 sources

How to use AHA and BHA

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What to watch for

  • Over-exfoliation: tightness, shine, stinging when you apply moisturizer.
  • Sunburn more easily than usual while using AHAs.

Why this verdict

AHAs such as glycolic and lactic acid are water-soluble and work mainly on the skin surface, loosening dead cells. Salicylic acid is oil-soluble, so it can get into oily pores, which is why it is the BHA used in OTC acne products. Those different actions are why some products combine the two.

The risk comes from stacking. Each acid can cause stinging and dryness on its own; separate leave-on products layered on top of each other add up, and acne-prone skin that is already using benzoyl peroxide or a retinoid has little room for extra irritation. AHAs also increase sun sensitivity: the FDA recommends sunscreen, protective clothing and limited sun exposure while using AHA products and for a week afterward.

An ingredient list will not tell you how strong an acid is. Ingredients such as citric or lactic acid often appear in tiny amounts just to adjust pH, which is why our checker does not treat every acid on a label as an exfoliant. The product type and directions are a better guide to whether it is meant to exfoliate.

For acne specifically, salicylic acid is the better-supported choice. It is an FDA monograph acne drug and gets a conditional recommendation in the 2024 AAD guideline, while a 2020 Cochrane review found the evidence for AHAs in acne to be limited.

About each ingredient

AHAs (glycolic, lactic or mandelic acid)

The most common alpha hydroxy acid (AHA). It loosens dead skin cells on the surface. The FDA advises sun protection while using AHA products and for a week after. A 2020 Cochrane review found only low-certainty evidence for AHAs in acne.

Some evidence in acne, limited

  • Can increase sun sensitivity. Use sunscreen daily.
  • Can cause dryness, peeling or stinging, especially when combined with other actives.

BHA (salicylic acid)

A beta hydroxy acid (BHA) that helps clear clogged pores. As an OTC acne drug the FDA monograph allows 0.5% to 2%; it also appears in cosmetics as an exfoliant. The 2024 AAD guideline gives it a conditional recommendation. Ask a clinician before using it in pregnancy.

OTC acne drug (FDA monograph M006), 0.5–2%

  • Can cause dryness, peeling or stinging, especially when combined with other actives.
  • Ask your obstetric clinician or dermatologist before using salicylic acid products while pregnant or breastfeeding. It is chemically related to aspirin, and advice varies with the product and how much skin it covers.
Full guide: Salicylic Acid for Acne: How It Works and How to Use It

See all ingredient pairing guides

Your next step

Go deeper Salicylic Acid for Acne: How It Works and How to Use It How salicylic acid unclogs pores, the 0.5–2% strengths the FDA allows OTC, what the evidence shows, how to combine it, and who should avoid it. Not sure what fits you? Find your treatment path 10 quick questions, about 2 minutes. It runs in your browser and nothing is sent or stored.

Frequently asked questions

Can I use glycolic acid and salicylic acid on the same day?

Many people can, for example BHA in the morning and AHA at night, once their skin tolerates each one. Layering both leave-on products at the same time is the most irritating option.

Which is better for acne, AHA or BHA?

Salicylic acid (a BHA) is an FDA-recognized OTC acne drug at 0.5% to 2%, and it can get into oily pores. AHAs mainly exfoliate the surface and have weaker evidence in acne.

Why do AHA products tell me to use sunscreen?

The FDA says AHAs can increase the skin’s sensitivity to the sun and the chance of sunburn, and recommends sun protection while using them and for a week afterward.

Sources 6

  1. Alpha hydroxy acids (cosmetic ingredients) (opens in a new tab) U.S. Food and Drug Administration
  2. Applications of hydroxy acids: classification, mechanisms, and photoactivity (opens in a new tab) Clinical, Cosmetic and Investigational Dermatology , 2010
  3. OTC Monograph M006: Topical Acne Drug Products for Over-the-Counter Human Use (opens in a new tab) U.S. Food and Drug Administration , 2021
  4. Guidelines of care for the management of acne vulgaris (Reynolds et al.) (opens in a new tab) Journal of the American Academy of Dermatology , 2024
  5. Topical azelaic acid, salicylic acid, nicotinamide, sulphur, zinc and fruit acid (alpha-hydroxy acid) for acne (opens in a new tab) Cochrane Database of Systematic Reviews , 2020
  6. 10 skin care habits that can worsen acne (opens in a new tab) American Academy of Dermatology

About this page

Medical review pending. This page was researched and written by the AcneRid Editorial Team from the cited sources, but it has not yet been reviewed by a licensed clinician. We update this notice when a review is complete. About our review process.

Written by the AcneRid Editorial Team. Read our editorial policy. Spotted an error? Tell us; we correct mistakes openly.