Best Exfoliants for Smooth Skin 2026: AHA, BHA, PHA and Physical

Exfoliation is one of the most effective skincare steps for achieving smooth, bright, even-toned skin. By removing the build-up of dead skin cells that dulls complexion, clogs pores, and prevents your other products from penetrating, regular exfoliation can transform your skin\’s texture and clarity. But with AHAs, BHAs, PHAs, enzymatic exfoliants, and physical scrubs all claiming to be the best, choosing the right option can be overwhelming. This guide breaks it all down.

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Why Exfoliate?

The skin naturally sheds dead cells in a process called desquamation—but this slows significantly with age and is affected by factors like dryness, pollution, and sun damage. When dead cells accumulate:

Complexion looks dull and flat
Pores appear enlarged and may become clogged
Uneven texture makes makeup sit unevenly
Serums and moisturisers cannot penetrate as effectively
Hyperpigmentation and dark spots remain more visible

Regular, appropriate exfoliation removes this barrier, revealing fresher, brighter skin underneath and allowing your other skincare products to work more effectively.

Types of Exfoliants

Exfoliants fall into two broad categories:

Chemical exfoliants: Use acids or enzymes to dissolve the bonds between dead skin cells, allowing them to shed naturally. Generally gentler and more even in action than physical methods.
Physical exfoliants: Use abrasive particles or textures to mechanically buff away dead skin cells. Effective but require careful technique to avoid damage.

AHA Exfoliants Explained

Alpha Hydroxy Acids (AHAs) are water-soluble acids that work on the skin\’s surface, loosening dead skin cells and improving texture, tone, and radiance.

Types of AHA

Glycolic acid: Smallest molecule, penetrates deepest, most potent. Best for anti-ageing, brightening, and experienced exfoliators.
Lactic acid: Larger molecule, gentler action, also hydrating. Best for dry skin, beginners, and those with sensitive skin.
Mandelic acid: Largest AHA molecule, gentlest action, mild antimicrobial properties. Best for sensitive, acne-prone, or rosacea-prone skin.
Tartaric and malic acids: Often used alongside glycolic acid to support its action; gentle supporting exfoliants.

AHA Benefits

Brightens dull skin
Fades hyperpigmentation and dark spots
Smooths rough texture
Stimulates collagen production
Reduces the appearance of fine lines

BHA Exfoliants Explained

Beta Hydroxy Acid (BHA)—primarily salicylic acid—is oil-soluble, allowing it to penetrate deep into pores where AHAs cannot reach.

Salicylic Acid Benefits

Penetrates and clears congested pores
Reduces blackheads and whiteheads
Anti-inflammatory, calms acne
Reduces oiliness
Can prevent future breakouts

Salicylic acid is available in concentrations from 0.5% (gentle, suitable for regular use in cleansers) to 2% (effective spot treatment and toner). It\’s the go-to choice for acne-prone and oily skin types.

PHA Exfoliants Explained

Polyhydroxy Acids (PHAs) are next-generation exfoliants with larger molecules than AHAs, meaning they work more slowly and gently on the skin\’s surface. Types include gluconolactone, lactobionic acid, and galactose.

Why PHA Is Special

Gentlest of all chemical exfoliants
Suitable for eczema-prone and very sensitive skin
Also humectant—hydrates while exfoliating
Antioxidant properties
Safe to use more frequently than AHA/BHA

Physical Exfoliation

Physical exfoliants include sugar and salt scrubs, facial scrubs with micro-beads or ground seeds, exfoliating mitts, and konjac sponges.

Pros and Cons

Pros: Immediate tactile smoothness, accessible, no waiting time for acids to work
Cons: Risk of micro-tears if particles are too abrasive; uneven pressure can cause irritation; not suitable for inflamed or broken skin

Safe Physical Exfoliation

Choose round, smooth particles (sugar, jojoba beads) over jagged ones (nut shells)
Use very gentle circular motions with light pressure
Limit to once per week
Never use on active breakouts or irritated skin

Best Exfoliant for Your Skin Type

Skin Type	Best Exfoliant	Frequency
Oily/acne-prone	BHA (salicylic acid 1–2%)	Daily or every other day
Dry/dehydrated	Lactic acid AHA	2–3x per week
Sensitive	PHA or mandelic acid	2x per week
Combination	BHA on T-zone, AHA on cheeks	2–3x per week
Mature/ageing	Glycolic acid AHA	2–3x per week
Dull/uneven tone	Glycolic or lactic AHA	3x per week

How to Use Exfoliants Safely

Start slowly: Begin with once per week and gradually increase as skin adapts
Evening only for AHAs: AHAs increase photosensitivity—always use at night and apply SPF the following morning
Don\’t layer multiple actives: Avoid using AHA, BHA, retinoids, and vitamin C all in one evening
Watch for over-exfoliation signs: Redness, tightness, increased breakouts, and sensitivity are signs to reduce frequency
Always follow with SPF: Exfoliated skin is more vulnerable to UV damage

Best Exfoliating Products 2026

The Ordinary Glycolic Acid 7% Toning Solution: Best budget glycolic acid toner for brightening and smoothing
Paula\’s Choice Skin Perfecting 2% BHA Liquid: The gold standard BHA toner for pore-clearing and acne prevention
Sunday Riley Good Genes Lactic Acid Treatment: Premium lactic acid treatment with immediate smoothing results
COSRX AHA/BHA Clarifying Treatment Toner: Gentle combination acid toner suitable for sensitive-combination skin
Pixi Glow Tonic: 5% glycolic acid toner in a gentle, accessible formula—great for beginners

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Frequently Asked Questions

How often should I exfoliate?

It depends on your skin type and the exfoliant\’s strength. Gentle PHAs can be used daily. Lactic acid and salicylic acid at low concentrations can typically be used 3–5 times per week. Stronger glycolic acid treatments work best 2–3 times per week. Start with once per week and increase gradually, listening to your skin\’s response.

Can I use AHA and BHA together?

Yes, but start slowly. Products formulated with both AHA and BHA (like some combination toners) are designed to be used together safely. If using separate products, apply the BHA first (it works at a lower pH), wait 20 minutes, then apply AHA. Alternatively, use AHA one evening and BHA another evening to avoid potential irritation from layering.

Why is my skin worse after exfoliating?

If skin becomes red, more broken out, or sensitive after exfoliating, you\’re likely over-exfoliating or using a too-high concentration. Reduce frequency, switch to a gentler acid (lactic or mandelic instead of glycolic), and focus on barrier repair with ceramide moisturisers and hyaluronic acid. Give skin 1–2 weeks to recover before reintroducing exfoliation.

Should I exfoliate before or after cleansing?

After cleansing. Cleanse first to remove makeup, SPF, and surface debris so your exfoliant can work directly on the skin rather than wasting its action on surface residue. Apply your toner or liquid exfoliant to clean, dry skin, wait for it to absorb, then continue with the rest of your routine.