The 7 Best Glycolic Acid Exfoliants, by Strength, pH, and How They Pair With a Retinoid
Key Takeaways
Of all the Alpha Hydroxy Acids, Glycolic Acid has the smallest molecule, and Cleveland Clinic says it can penetrate skin deeper than other AHAs. It also notes it may cause more irritation on sensitive skin.
Strength is about two numbers: percentage and pH. The FDA says how much an AHA exfoliates depends on its type, concentration, and pH, and an industry safety panel considers consumer Glycolic Acid products safe at 10% or less with a pH of 3.5 or higher.
Our top pick is Paula’s Choice SKIN PERFECTING 8% AHA Gel Exfoliant, which states both its 8% Glycolic Acid and a pH of 3.5 to 3.9.
With a Retinoid, keep them apart at first: Glycolic Acid in the morning and Retinol at night, or on alternate days, as Cleveland Clinic suggests.
AHAs can make skin more sensitive to the sun, the FDA says, so daily sunscreen is especially important.
The best Glycolic Acid exfoliant is the one whose strength fits your skin and your Retinoid schedule. If you’re new to acids, a 5% toner used a couple of times a week is plenty. If you’ve been using AHAs for a while, an 8% to 10% leave-on formula may suit you better. Below, seven Glycolic Acid exfoliants ranked by how clearly they label their strength and how easily they fit around a Retinoid.
How We Compared These Exfoliants
Nothing on this list was tested on skin. We compared each brand’s product page and ingredient list, read between September and early October 2026, looking at the Glycolic Acid percentage and pH where the brand states them, where Glycolic Acid sits on the ingredient list, other acids and Retinoids in the formula, directions, and price.
Glycolic Acid Strength and pH, Explained
The FDA’s page on Alpha Hydroxy Acids explains that the extent of exfoliation “depends on the type and concentration of the AHA, its pH, and other ingredients in the product.” So the percentage on the front isn’t the whole story: two products at the same strength can behave differently.
The same page reports that the Cosmetic Ingredient Review Expert Panel, the industry’s own safety review body, concluded Glycolic and Lactic Acid products are safe for consumers if the AHA concentration is 10% or less and the final product has a pH of 3.5 or greater, with directions to use sun protection. Both products here that state a pH, picks 1 and 2, fall within those limits.
Product | Glycolic Acid stated | pH stated |
|---|---|---|
L’Oréal Paris Revitalift Derm Intensives 10% Pure Glycolic Acid Serum | 10% | not stated |
Paula’s Choice 8% AHA Gel Exfoliant | 8% | 3.5 to 3.9 |
The Ordinary Glycolic Acid 7% Exfoliating Toner | 7% | about 3.6 |
Pixi Glow Tonic | 5% | not stated |
Kiehl’s Clearly Corrective Triple Acid Peel Serum | 5.5% AHAs (Glycolic and Lactic combined) | not stated |
U Beauty and Murad | not stated | not stated |
Glycolic Acid and Your Retinoid
Both Glycolic Acid and Retinoids can irritate, and both make skin more sun-sensitive. Cleveland Clinic’s Retinol guide suggests either alternating days or using Glycolic Acid in the morning and Retinol at night. Its Glycolic Acid guide adds that when you’re starting out, you may want to avoid using Glycolic Acid alongside Retinol, other exfoliants, or Vitamin C serums, so you can tell what’s causing a problem, and to begin once or twice a week before working up to nightly.
A simple starting week: Retinoid on two or three nights, Glycolic Acid on one or two different nights, and a plain moisturizer on the rest. A formula that already pairs acids with a Retinoid, like pick 3, covers both on the nights you use it.
1. Paula’s Choice SKIN PERFECTING 8% AHA Gel Exfoliant: Best Overall Glycolic Acid Exfoliant
Glycolic Acid is second on this 15-ingredient list, right after Water, and Paula’s Choice states both the strength, 8%, and the pH, 3.5 to 3.9. Chamomile, aloe, green tea, Sodium Hyaluronate, and Panthenol round out a lightweight gel.
Key features:
8% Glycolic Acid at pH 3.5 to 3.9: both numbers on the page.
Leave-on gel: apply a dime-sized amount after cleansing, and don’t rinse.
Soothing extras: chamomile, aloe, and Panthenol.
Tradeoff: Paula’s Choice allows once or twice daily use, but if you also use a Retinoid, start with a couple of nights a week on non-Retinoid nights.
Best for: experienced AHA users who want a clearly labeled leave-on Glycolic Acid.
Price: $37 for 3.3 fl oz.
2. The Ordinary Glycolic Acid 7% Exfoliating Toner: Best Budget Glycolic Acid Toner
The Ordinary’s toner lists Glycolic Acid second, at 7%, with a stated pH of about 3.6. Rose water, aloe, ginseng, and Tasmanian pepperberry, which the brand says helps soothe the skin, come after it.
Key features:
7% Glycolic Acid at about pH 3.6: a low pH for a toner.
Evening, once a day: The Ordinary’s direction for the face and neck.
Not for compromised skin: The Ordinary says not to use it on sensitive, peeling, or compromised skin.
Tradeoff: The Ordinary advises patch testing first, and as an evening product it competes with your Retinoid for the same nights, so alternate them.
Best for: a low-cost Glycolic Acid step for skin that already tolerates acids.
Price: $9 for 100 ml.
3. U Beauty the Resurfacing Compound: Best Glycolic Acid Serum With a Retinol Ester
U Beauty calls the Resurfacing Compound its Holy-Grail Multitasking Serum. Glycolic Acid is 10th on its 33-ingredient list, with Lactobionic Acid and Mandelic Acid alongside it and Retinyl Palmitate, which U Beauty calls a Stable Retinol Ester, further down. Higher up, in third place, is Sodium Ascorbyl Phosphate, a Vitamin C derivative, and Glycerin and two Hyaluronic Acid forms add hydration.
Because it combines acids and a Retinoid in one formula, it combines the benefits of both steps on the days you use it, without stacking a separate toner and Retinol.
Key features:
Glycolic plus two gentler acids: Lactobionic and Mandelic Acid in the same serum.
Retinyl Palmitate: described by U Beauty as a gentle, effective Retinoid.
Pore results: U Beauty says 96% of 30 volunteers in an independent instrumental study had smaller-looking pores after using it once a day for 15 days.
Tradeoff: U Beauty doesn’t publish a Glycolic Acid percentage or pH, so it doesn’t sit on the strength table above, and Methyldihydrojasmonate, a fragrance ingredient, is on the list. If irritation occurs, U Beauty suggests using it in the evening only.
Best for: Retinoid users who’d rather not juggle a separate acid toner.
Price: $228 for 50 ml.
4. L’Oréal Paris Revitalift Derm Intensives 10% Pure Glycolic Acid Serum: Best 10% Glycolic Acid Serum
This is the highest stated percentage on the list, at the 10% ceiling the safety panel set for consumer products. L’Oréal pairs it with aloe vera extract and says it’s fragrance-free, paraben-free, dye-free, and allergy-tested.
Key features:
10% Glycolic Acid: the brand’s stated strength.
Nightly use, built up slowly: L’Oréal suggests sensitive skin starts two to three times a week.
Four to five drops: after cleansing and before moisturizer.
Tradeoff: L’Oréal doesn’t state the pH, and nightly use leaves no room for a Retinoid on the same night.
Best for: someone ready to step up from a 5% to 8% formula.
Price: $32.99 for 1 oz.
5. Pixi Glow Tonic: Best Gentle Glycolic Acid Toner for Beginners
Pixi’s toner is built on 5% Glycolic Acid with aloe vera and ginseng, and it’s alcohol-free. You sweep it over the face and neck with a cotton pad, morning or night.
Key features:
5% Glycolic Acid: the lowest stated strength here.
Alcohol-free: per Pixi.
Big bottle: 250 ml lasts.
Tradeoff: Pixi doesn’t state the pH, and the full ingredient list wasn’t shown on the page we read. Pixi suggests sensitive skin starts with limited weekly use.
Best for: a first Glycolic Acid step, especially on mornings before a Retinol night.
Price: $29 for 250 ml.
6. Murad Vita-C Glycolic Serum: Best Glycolic Acid Plus Vitamin C Serum
Murad lists Glycolic Acid fourth, followed by Lactic Acid, Ascorbic Acid, and Tetrahexyldecyl Ascorbate, two forms of Vitamin C, plus Urea and Glutathione. Murad says to follow it with moisturizer and use sunscreen during the day.
Key features:
Glycolic Acid plus Vitamin C: in one serum.
Murad’s study: 91% saw brighter, smoother-looking skin, reported by participants in a two-week clinical study.
Face, neck, and chest: massaged in evenly.
Tradeoff: Murad doesn’t state a Glycolic Acid percentage, and combining an acid and Vitamin C is something Cleveland Clinic suggests avoiding when you’re new to Glycolic Acid.
Best for: acid-experienced skin that wants a brighter look from one serum.
Price: $94 for 1.0 fl oz.
7. Kiehl’s Clearly Corrective Daily Re-Texturizing Triple Acid Peel Serum: Best Glycolic Acid Blend for Daily Use
Kiehl’s mixes three kinds of acid in one leave-on serum: 5.5% AHAs (Glycolic Acid and Lactic Acid), 0.18% BHA (Salicylic Acid) and 3.0% PHA (Gluconolactone). Copper Gluconate is added, which the brand says helps reduce discomfort.
Key features:
Stated percentages: 5.5% AHAs, 0.18% BHA and 3.0% PHA, per Kiehl’s.
Leave-on, up to twice a day: pour into your palms or onto a cotton pad, and don’t rinse.
Kiehl’s figures: 91% agreed skin appeared smoother in a consumer perception study after four weeks of use.
Tradeoff: Kiehl’s gives the AHA total rather than the Glycolic Acid share on its own, and no pH. Daily use leaves little room for a Retinoid, so keep it to non-Retinoid days.
Best for: skin that likes a gentle multi-acid formula more than a single strong Glycolic Acid.
Price: $55 for 1.0 fl oz (30 ml).
How to Add Glycolic Acid to a Retinoid Routine
Settle into your Retinoid first. Add Glycolic Acid only once your skin has stopped flaking or stinging from it.
Start once or twice a week, as Cleveland Clinic suggests, on non-Retinoid nights or in the morning.
Choose one acid product. Two Glycolic Acid products in one routine is more than most skin needs.
Moisturize after, and wear sunscreen every day. The FDA recommends AHA products carry a “Sunburn Alert” because they can increase sun sensitivity.
Pause both if your skin turns red, raw, or stings with plain moisturizer.
Our roundup of chemical exfoliants covers Lactic, Mandelic, and Salicylic Acid options too.
When to See a Dermatologist
See a board-certified dermatologist if an exfoliant causes burning, blistering, or peeling that doesn’t settle after you stop. The FDA’s reports on AHAs include burning, rashes, and pigment changes. A dermatologist can also advise on in-office peels if at-home strengths aren’t enough for you.
Frequently Asked Questions
What Is the Best Glycolic Acid Exfoliant?
Our top pick is Paula’s Choice SKIN PERFECTING 8% AHA Gel Exfoliant, because it states both its strength and pH. For beginners, Pixi Glow Tonic at 5% is gentler.
What Percentage of Glycolic Acid Should I Use?
Most at-home products sit between 5% and 10%. Starting at the lower end and building up is the gentler path, especially if you also use a Retinoid.
Can I Use Glycolic Acid and Retinol Together?
Yes, but usually not in the same step at first. Cleveland Clinic suggests alternating days or using Glycolic Acid in the morning and Retinol at night.
Why Does pH Matter for Glycolic Acid?
Per the FDA, strength comes from concentration and pH together, so the percentage alone can mislead. The industry safety panel it cites set a floor of pH 3.5 for consumer Glycolic Acid products.
How Long Does Glycolic Acid Take to Work?
Cleveland Clinic notes that with over-the-counter products, it may take several months of consistent use before skin looks brighter or more even.