Salicylic Acid (BHA)

Salicylic acid (BHA) is one of the most widely trusted oil-soluble exfoliants in skincare. As a leave-on serum, it provides concentrated exfoliating benefits that help keep pores looking clearer and skin feeling smoother over time.

• Helps keep pores looking clearer and more refined
• Supports a smoother, more refined-looking skin surface
• Also helps support a calmer, less congested-looking complexion

• A salicylic acid cleanser suits morning or evening. A leave-on serum is usually an evening step.
• The cleanser is a daily step. Start the serum at about three evenings a week and build up only if your skin stays comfortable — daily is within the usual guidance once you are used to it.
• Across the whole affected area in a thin layer, rather than dabbed onto single spots, and keep it away from the eye area. Rinse with plenty of water if any gets in your eyes.
• Follow it with a moisturizer. Dryness is the thing most likely to make people give up on it.
• If it starts to feel drying or tight, drop to every other evening rather than pushing through.
• Using more than one blemish product at a time makes dryness more likely — if your skin gets irritated, stick to one.
• Keep the serum to a different evening from other exfoliating acids and from retinol.
• Darker skin tones can be more prone to temporary uneven tone from strong actives — keep an eye on how your skin responds, especially early on.

Products containing salicylic acid may be regulated as over-the-counter (OTC) products in some markets. Always read and follow product label directions. Discontinue use if persistent irritation occurs.

Six situations change whether Salicylic Acid (BHA) suits your skin right now. Each one is either a reason to skip it, a reason to go slowly, or nothing to watch for.

Fragile or Sensitive

Skip it

Recent Facial or Laser

Skip it

Maternity & Nursing

Go slowly

Prone to Redness

Go slowly

Dry or Itchy Patches

Go slowly

Recent Shave or Wax

Go slowly

Maternity & Nursing — If you are pregnant or nursing, you may prefer to check with your healthcare provider before use.

Prone to Redness — Try it on a small area first, and use it less often — or stop — if you notice stinging or extra redness.

Dry or Itchy Patches — Keep the rest of your routine well moisturized, and use it less often — or stop — if you notice tightness or itching.

Recent Shave or Wax — Avoid for 24 hours after waxing, threading, or dermaplaning.

Where a figure appears, that is the maximum strength allowed or advised for salicylic acid (bha) in that market — some are set in cosmetics regulation, others are the ceiling a cosmetic safety panel recommends. The rest set no maximum. Either way these are limits, not targets — the right strength for a formula is the formulator's decision.

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BHA cleanser · 6

COSRXSalicylic Acid Daily Gentle Cleanser - 150ml$11.20innisfreeVolcanic BHA Pore Cleansing Foam - 150g$8.23SKIN1004Madagascar Centella Tea-Trica BHA Foam - 125ml$9.31CARE:NELCicavita B5 Salicylic Acid Gentle Cleanser - 150ml$6.50EYENLIPSalicylic Acid Cleansing Foam - 150ml$6.49ODELOIRaspberry Salicylic Acid Foam Cleansing - 200ml$12.95

BHA exfoliating serum · 6

Cos De BAHASalicylic Acid BHA 2% Serum (SS) - 30ml$8.51SKINFOODShine Muscat Cica BHA Serum - 50ml$25.53

When should you apply Salicylic Acid (BHA)?

A salicylic acid cleanser suits morning or evening. A leave-on serum is usually an evening step.

Which form of Salicylic Acid (BHA) should you use?

BHA cleanser — your wash, morning or evening, up to daily. BHA exfoliating serum — before moisturizer, morning or evening, 3× a week to daily.

How often can you use Salicylic Acid (BHA)?

Up to daily as the BHA cleanser and 3× a week to daily as the BHA exfoliating serum.

Where do you apply Salicylic Acid (BHA)?

All over, not the eye area. Keep it off your lips too.

Does Salicylic Acid (BHA) make skin more sensitive to the sun?

No. Salicylic Acid (BHA) is not flagged as increasing sun sensitivity.

What should you not use with Salicylic Acid (BHA)?

Space it apart from Azelaic acid, Cysteamine, Eye-area retinol, Other exfoliants, Retinoids and Vitamin C.

Who should avoid Salicylic Acid (BHA)?

Skip it if any of these apply: Fragile or Sensitive and Recent Facial or Laser. Go slowly with Maternity & Nursing, Prone to Redness, Dry or Itchy Patches and Recent Shave or Wax.

Is there a cosmetic limit for Salicylic Acid (BHA)?

Only some regions set one. The maximum strength for Salicylic Acid (BHA) in a cosmetic is 2% in Canada, 2% (face, rinse-off or leave-on); 3% (rinse-off hair); 0.5% (body lotion, eye makeup, lipstick, roll-on deodorant) in the European Union and 2% (face, rinse-off or leave-on); 3% (rinse-off hair); 0.5% (body lotion, eye makeup, lipstick, roll-on deodorant) in Great Britain. No maximum is set in the United States. A cap is a limit on the rules, not a signal to use more.

Everything on this page traces to the sources listed below — regulators' own publications and published studies. Where the evidence does not answer a question, it is left unanswered.

Some sources below are the official product information for prescription medicines — some contain this ingredient at higher strengths, others are cited for how they interact with it. We use them for their safety and handling detail only. A cosmetic product is not one of those medicines and is not intended to treat any condition.

Our review is AI-assisted and is not a named expert's opinion. Last reviewed August 4, 2026.

Think something here is out of date or wrong? Email us at wiki@skinintelligence.ai with your reasoning and where you read it. We read what people send, and we update the page when the sources support it.