Actives & Acids

Best Chemical Exfoliants for Sensitive Skin

Five gentle exfoliating acids for reactive skin — mandelic, lactic and azelaic acid, a low-strength BHA and a soft glow toner — ranked on molecule size, stated strength and how much they sting.

By Stephen V.Last updated How we pick

Sensitive skin can still exfoliate — the mistake is reaching for the same high-strength glycolic or salicylic acid everyone else uses and then wondering why it burns. The gentler route isn’t just a lower percentage; it’s a smarter choice of acid. A large-molecule AHA like mandelic or lactic sinks in slowly, so it resurfaces evenly instead of shocking the surface. Azelaic acid barely exfoliates in the abrasive sense at all — it calms redness and evens tone, which is why it suits rosacea-prone skin. And a well-built BHA at the right pH can clear congestion without stripping, as long as you use it a couple of nights a week rather than daily.

So this list isn’t ranked on raw strength — it’s ranked on how comfortably each acid delivers a real result. We grade on the acid’s molecule size and form, its stated concentration, whether the formula is fragrance-free(fragrance is a common trigger for reactive skin), and the honest real-world feel. Four of the five picks below are fragrance-free; the one that isn’t, we flag plainly. Whatever you choose, the rules for sensitive skin are the same: start once or twice a week, patch-test first, keep the barrier well moisturized, and let your skin — not a schedule — set the pace.

How this is funded:we earn a commission if you buy through our links, at no extra cost to you. It never changes which product we recommend, and we’ll tell you when we’d skip one. Full disclosure.

Quick picks

Ranked on formulation, stated concentration and buyer fit. Select a row to jump to the full write-up. We have not tested these products — here is exactly what we do instead.

#ProductBest forPrice
1
The Ordinary Mandelic Acid 10% + HA

The Ordinary Mandelic Acid 10% + HA

Mandelic is the large-molecule AHA that sinks in slowly, so it exfoliates with less sting than glycolic. A labeled 10% that's an easy first acid for sensitive skin, and a lower-risk one for evening tone on deeper skin tones.

Best overall for sensitive skin
$7.80 · View on Amazon

Price as of July 23, 2026. #ad How we’re funded

2
The Ordinary Azelaic Acid Suspension 10%

The Ordinary Azelaic Acid Suspension 10%

A multitasker with real evidence behind it for redness, bumps and post-acne marks — and one of the rare actives usually safe for rosacea-prone skin. A labeled 10%, for a handful of dollars.

Best for redness & rosacea-prone skin
$12.20 · View on Amazon

Price as of July 23, 2026. #ad How we’re funded

3
The Ordinary Lactic Acid 10% + HA

The Ordinary Lactic Acid 10% + HA

Lactic acid is the larger, more hydrating cousin of glycolic, so it smooths with less of the bite. A labeled 10% that makes a sensible first AHA for dry or normal skin.

Best gentle AHA for dry skin
$9.20 · View on Amazon

Price as of July 23, 2026. #ad How we’re funded

4
Paula's Choice Skin Perfecting 2% BHA Liquid Exfoliant

Paula's Choice Skin Perfecting 2% BHA Liquid Exfoliant

The most recommended leave-on BHA around, and rightly so — a labeled 2% salicylic acid at the correct pH in a lightweight liquid. No single product beats it for blackheads and clogged pores.

Best gentle BHA for congestion
$15.00 · View on Amazon

Price as of July 23, 2026. #ad How we’re funded

5
Pixi Glow Tonic (5% Glycolic Acid)

Pixi Glow Tonic (5% Glycolic Acid)

A mild 5% glycolic toner with aloe and ginseng, gentle enough to work toward near-daily use for glow. It's fragranced, though, and the per-mL cost runs high next to The Ordinary's glycolic.

Best low-strength glow toner
$29.00 · View on Amazon

Price as of July 23, 2026. #ad How we’re funded

The picks in full

#1Best overall for sensitive skin

The Ordinary Mandelic Acid 10% + HA

Mandelic is the large-molecule AHA that sinks in slowly, so it exfoliates with less sting than glycolic. A labeled 10% that's an easy first acid for sensitive skin, and a lower-risk one for evening tone on deeper skin tones.

Strengths

  • A big molecule that penetrates slowly, making it the gentlest of the AHAs
  • A disclosed 10% strength for just a few dollars
  • Lower risk of triggering post-inflammatory pigmentation, a plus on deeper skin tones

Trade-offs

  • The slow penetration means results build gradually, not overnight
  • Still an acid — start a few nights a week and pair with daytime SPF
Key activeMandelic acid (AHA)
Stated concentration10%
FormatLight serum
Fragrance-freeYes
Best forSensitive, Blemish-prone, Deeper skin tones

Formulation note. 10% mandelic acid with hyaluronic acid. Mandelic's larger molecule moves into the skin more slowly than glycolic or lactic, which is what makes it low-irritation — a reasonable reason it's so often suggested for sensitive skin and for pigment-prone deeper skin tones.

Ingredients and claims read from the product listing, on July 18, 2026. “Not published” means the brand does not state that figure.

#2Best for redness & rosacea-prone skin

The Ordinary Azelaic Acid Suspension 10%

A multitasker with real evidence behind it for redness, bumps and post-acne marks — and one of the rare actives usually safe for rosacea-prone skin. A labeled 10%, for a handful of dollars.

Strengths

  • A disclosed 10% azelaic acid with solid evidence for redness and pigmentation
  • Usually well-tolerated by rosacea-prone skin
  • Layers comfortably with most other actives

Trade-offs

  • The silicone suspension has a distinctive, faintly grainy feel
  • Overapply it and it can pill beneath some sunscreens
Key activeAzelaic acid
Stated concentration10%
FormatSilicone cream-gel
Fragrance-freeYes
Best forRosacea-prone, Blemish-prone, Sensitive

Formulation note. 10% azelaic acid. The evidence backs it for rosacea redness, mild acne and pigmentation, and it's mild enough for reactive skin — an unusually versatile, well-tolerated active.

Ingredients and claims read from the product listing, on July 18, 2026. “Not published” means the brand does not state that figure.

#3Best gentle AHA for dry skin

The Ordinary Lactic Acid 10% + HA

Lactic acid is the larger, more hydrating cousin of glycolic, so it smooths with less of the bite. A labeled 10% that makes a sensible first AHA for dry or normal skin.

Strengths

  • A disclosed 10% lactic acid at a budget price
  • The larger molecule is gentler and more hydrating than glycolic
  • Hyaluronic acid rides along to offset dryness

Trade-offs

  • Milder than glycolic, so tough texture may respond more slowly
  • It's still an exfoliant — build up gradually and wear SPF the next day
Key activeLactic acid (AHA)
Stated concentration10%
FormatLight serum
Fragrance-freeYes
Best forNormal, Dry, AHA-curious

Formulation note. 10% lactic acid with hyaluronic acid. Lactic's molecule is bigger than glycolic's, so it works a touch more slowly and tends to feel more hydrating — which is why it's an easier place to start with AHAs on dry or normal skin.

Ingredients and claims read from the product listing, on July 18, 2026. “Not published” means the brand does not state that figure.

#4Best gentle BHA for congestion

Paula's Choice Skin Perfecting 2% BHA Liquid Exfoliant

The most recommended leave-on BHA around, and rightly so — a labeled 2% salicylic acid at the correct pH in a lightweight liquid. No single product beats it for blackheads and clogged pores.

Strengths

  • A disclosed 2% salicylic acid formulated at a pH that actually works
  • Being oil-soluble, the BHA reaches inside pores where AHAs can't go
  • A fragrance-free, non-abrasive leave-on liquid

Trade-offs

  • Begin 2-3 times a week, since going daily right away can over-exfoliate
  • Early on, keep it off the same night as retinol
Key activeSalicylic acid (BHA)
Stated concentration2%
FormatWatery liquid
Fragrance-freeYes
Best forOily, Combination, Blemish-prone

Formulation note. 2% salicylic acid at a working pH. Its oil solubility is the whole point — BHA clears out the inside of pores, which is why it outperforms a scrub on blackheads.

Ingredients and claims read from the product listing, on July 18, 2026. “Not published” means the brand does not state that figure.

#5Best low-strength glow toner

Pixi Glow Tonic (5% Glycolic Acid)

A mild 5% glycolic toner with aloe and ginseng, gentle enough to work toward near-daily use for glow. It's fragranced, though, and the per-mL cost runs high next to The Ordinary's glycolic.

Strengths

  • A soft 5% glycolic that many can build up to using most days
  • Aloe and ginseng round out an otherwise simple exfoliating toner
  • A big 250ml bottle that lasts a long time

Trade-offs

  • It contains fragrance, worth weighing for reactive skin
  • Cost per milliliter is high compared with The Ordinary's 240ml glycolic
  • At 5% it's mild, so stubborn texture may need something stronger
Key activeGlycolic acid (AHA)
Stated concentration5%
FormatWatery toner
Fragrance-freeNo
Best forNormal, Combination, Glow-seeking

Formulation note. 5% glycolic acid with aloe and ginseng. The low strength is what makes near-daily use realistic, but the added fragrance and the higher price per milliliter — set against The Ordinary's 240ml bottle — are the honest trade-offs to note.

Ingredients and claims read from the product listing, on July 18, 2026. “Not published” means the brand does not state that figure.

How to choose an exfoliant for sensitive skin

Start with the form of the acid, not the number on the label. The gentlest exfoliants are the ones with a larger molecule that penetrates slowly: mandelic acid is the standout, followed by lactic acid, both of which resurface far more evenly than small-molecule glycolic. If your main complaint is redness rather than rough texture, azelaic acidis the kindest option of all — it soothes and evens tone more than it sloughs, and it’s one of the few actives usually fine for rosacea-prone skin. If you’re oily and congested and sensitive, a leave-on BHAused sparingly gets inside pores where an AHA can’t reach, but it needs to be a fragrance-free formula at the correct pH so it works without over-drying.

Concentration matters less than cadence

For reactive skin, how often you exfoliate does more damage or good than the percentage. A stated 10% mandelic used twice a week is far kinder than a 7% glycolic used every night. Begin with one acid, one or two evenings a week, and build up only if your skin stays comfortable across a couple of weeks. A brief tingle on application is normal; lingering burning, tightness or shiny raw patchesmean you’ve overdone it — scale back and give the barrier time to recover. Never introduce two new acids at once, and don’t stack an exfoliant with retinol or benzoyl peroxide on the same night while you’re still learning your tolerance. Our guide to layering actives lays out what to alternate.

A note on fragrance

Fragrance is one of the most common causes of contact irritation, so sensitive-skin routines are safest fragrance-free. Four of our five picks — the mandelic, lactic and azelaic options and the Paula’s Choice BHA — leave fragrance out. The exception is the Pixi Glow Tonic: its genuinely low 5% glycolic strength makes it one of the mildest AHAs here and a realistic near-daily glow step, but it isfragranced. If your skin reacts to fragrance, patch-test it carefully or skip it in favour of one of the fragrance-free picks. We include it because low-strength glycolic is a legitimate gentle choice for many people — not because “sensitive” and “fragranced” are a natural pair.

Support the barrier, and mind the sun

Half of what people call “sensitivity” is really a compromised barrierfrom over-exfoliating. Exfoliating acids only feel gentle on skin that’s well moisturized, so seal every acid night with a fragrance-free barrier cream — see our best ceramide moisturizersfor the pick that does that job. Because every acid here raises sun sensitivity, daily sunscreen is non-negotiable; mandelic acid in particular is often suggested for deeper skin tones precisely because its slow, low-irritation action lowers the risk of provoking post-inflammatory pigmentation. If you want the full routine — cleanser, moisturizer and the gentlest actives beyond acids — our best actives for sensitive skin roundup builds it out.

Frequently asked questions

What is the gentlest chemical exfoliant for sensitive skin?

Mandelic acid. Its molecule is larger than glycolic or lactic acid, so it penetrates slowly and exfoliates evenly with much less sting. That makes a stated 10% mandelic a good first acid for reactive skin, and a lower-risk choice for evening tone on deeper skin tones. Azelaic acid is even gentler if your main concern is redness rather than rough texture.

Can sensitive skin use glycolic or salicylic acid?

Sometimes, if you choose the format and cadence carefully. A low-strength glycolic like a 5% toner, or a well-formulated 2% salicylic liquid used only a couple of nights a week, can work on sensitive skin. But high-strength glycolic used daily is a common cause of a damaged barrier. If either stings persistently, switch to mandelic, lactic or azelaic acid instead.

How often should sensitive skin exfoliate?

Start with one acid, one or two nights a week, and increase only if your skin stays comfortable over a couple of weeks. For reactive skin, frequency matters more than concentration — a gentle acid used too often still over-exfoliates. Persistent burning, tightness or redness is a signal to scale back rather than push through.

Should I avoid fragrance in an exfoliant for sensitive skin?

Where you can, yes. Fragrance is a frequent trigger for contact irritation, so fragrance-free formulas are the safest default. Most of the picks here are fragrance-free; the one exception, the Pixi Glow Tonic, is worth patch-testing first if you know your skin reacts to fragrance.

Do I still need sunscreen if I use a gentle acid?

Yes. All exfoliating acids, gentle ones included, increase how sensitive your skin is to UV, so daily broad-spectrum sunscreen is essential. It also protects the fresh, newly resurfaced skin and helps prevent the dark marks that reactive and deeper skin tones are prone to.

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