Glycolic Acid Cleanser
✓ Glycolic acid verified
The Ordinary Glycolic Acid 7% Exfoliating Toner
Glycolic acid: 7%
How to Use Glycolic Acid: Application, Timing & What to Do After
We independently evaluate products — verifying the ingredient list for every pick, and never accepting paid placement. Amazon links earn us a commission at no cost to you.
How we research · Affiliate disclosure →
Glycolic acid only works as well as you apply it. Get the mechanics wrong — the wrong contact time, layering it under the wrong active — and you trade results for irritation. This guide covers the application questions people actually search for: how to apply it, what to do afterward, how often, and what it can sit next to in a routine.
This is about the mechanics of a single application, not about building a full skincare routine around glycolic acid — for layering order, weekly schedules, and a complete ingredient-compatibility chart, see our glycolic acid routine guide. Where a point comes from a named source it is linked; where it is our own practical reading, it says so.
How to Apply Glycolic Acid, Step by Step
The steps differ slightly depending on whether your product is rinsed off or left on — but the sequence around it is the same either way.
1
Cleanse and dry
Wash with a gentle cleanser first (unless your glycolic acid product is itself a cleanser — see step 2), rinse, and pat skin dry. We found no source that compares damp and dry application, so this is standard routine order rather than a sourced absorption claim.
2
Apply, matched to your product's format
Rinse-off cleanser or wash: the American Academy of Dermatology describes at-home chemical exfoliants as applied for about 30 seconds and then rinsed well with lukewarm, not hot, water. That is general exfoliant guidance rather than glycolic-specific, so check your product's label too. Leave-on toner or serum: apply it to your skin as the label directs and don't rinse it off.
3
Let leave-on products settle
If you used a toner or serum, wait until skin no longer feels wet or tacky before layering anything else on top. No source we read gives a number of minutes for this — the next section explains what we did and did not find.
4
Moisturize
The American Academy of Dermatology notes that exfoliating can be drying to the skin and advises applying moisturizer immediately afterwards.
5
Sunscreen, the next morning
The FDA says AHA products can increase skin sensitivity to the sun, and Cleveland Clinic advises broad-spectrum sunscreen of SPF 30 or higher during the day, reapplied every two hours. Our sun exposure guide covers the FDA's findings in full.
One variable this sequence doesn't cover is strength — a 3% cleanser and a 10% serum are not applied with the same level of caution. Our glycolic acid percentage guide matches concentration to experience level if you're not sure where your product sits.
The Ordinary's 7% toner is a leave-on toner of the kind the steps above describe — follow the directions on its label.
What to Put On After — and How Long to Wait
"How long should I wait before moisturizing?" is the question this cluster keeps asking, and the honest answer starts with what we could and could not source.
We checked. Cleveland Clinic's glycolic acid page gives no moisturizer-timing figure. DermNet NZ's AHA facial treatments page says leave-on preparations are best applied at night but doesn't state a wait before the next step. Medical News Today and Healthline's AHA guide are the same — they cover frequency and sun protection, with no stated number of minutes for leave-on products. The one timing instruction we found is general rather than format-specific: the American Academy of Dermatology says to apply moisturizer immediately after exfoliating. If a page gives you an exact figure — 5 minutes, 10 minutes, 15 minutes — treat it with the same skepticism you'd apply to any unsourced number unless it names where it comes from.
What follows is our own practical reading, not a sourced rule:
- Format decides whether there's a wait at all. A rinse-off cleanser or body wash is gone from your skin once you rinse, so moisturizer can go on after you pat dry.
- For leave-on toners and serums, the cue is tactile, not a timer. Wait until skin no longer feels wet or sticky to the touch.
- If your skin still feels damp when you touch it, treat it as unfinished and hold off layering, however much time has passed.
How Often Should You Use It
Start conservatively and let your skin's response set the pace, not a fixed schedule — Cleveland Clinic recommends beginning once or twice a week and working up to nightly only once you've confirmed your skin tolerates it. Medical News Today likewise says to start with a low strength used infrequently and not to use it more often than the label or a doctor advises. A rinse-off cleanser and a leave-on toner aren't the same exposure even at "the same frequency" — Medical News Today notes leave-on formulas give the acid more time to work — which is why the full breakdown by product format, the ramp-up sequence, and the too-often signals now live on their own dedicated frequency guide rather than a section here. If your skin reacts poorly even at low frequency, our sensitive skin guide covers safe starting tiers, and our side effects guide covers what's a normal adjustment versus a reason to back off.
Morning or Night?
Night, for any leave-on product. Cleveland Clinic states it plainly: glycolic acid "should be used at night" because, like retinol, it increases sun sensitivity. DermNet NZ says that for the best results leave-on AHA preparations should be applied at night, "if necessary twice daily"; it does not give a reason for the night-time advice, and it does not tie twice-daily use to prescription strength. Medical News Today puts the reason as increased sunburn risk, "which is why some prefer to use it at night."
The exception is a rinse-off cleanser, which some people use in the morning: in Healthline's article on glycolic acid and retinol, dermatologist Dr. Anna Chacon says she uses glycolic acid in her daytime routine as a cleanser. If you go that route, use sunscreen the same morning. The FDA's findings are about sensitivity while using AHA products and for about a week after, not about time of day, and no study we read measured whether a rinse-off product changes it; our sun exposure guide sets out what the FDA guidance says on rinse-off versus leave-on products, including what has not been measured.
How Long to Leave It On, and Whether to Rinse
The answer splits by format:
| Format | Contact time | Rinse? |
|---|---|---|
| Cleanser / body wash | About 30 seconds (AAD guidance for at-home exfoliants generally) | Yes — rinse with lukewarm water |
| Toner / serum | Not timed — stays on | No — leave-on by design |
| At-home peel pad or kit | Set by the product label | Per the product's own instructions |
| Professional in-office peel | Minutes, timed by the provider (DermNet NZ: solution applied for three minutes) | Washed off by the provider |
The 30-second figure comes from the American Academy of Dermatology's instructions for scrubs and chemical exfoliants: apply for about 30 seconds, then rinse well with lukewarm, not hot, water. It is guidance for at-home exfoliation in general, not a glycolic-specific figure, so your product's label takes precedence. The important distinction is the last row: DermNet NZ describes a professional glycolic peel as the solution applied for three minutes and then washed off, at strengths from 20 to 70%, and that has nothing to do with any at-home product — don't borrow a professional peel's timing for a product you bought online. For at-home peel pads and kits, the FDA says to follow directions carefully and heed any warning statements on the label.
If your skin is already stinging or staying red after a contact time that should be uneventful, that's not a "wait longer" situation — see our guide to glycolic acid side effects for what's a normal adjustment and what means you should cut contact time or back off entirely.
Layering: What It Can and Cannot Go With
The short version: not at the same time, at least while your skin is still adjusting. Cleveland Clinic says that when you're first starting out you may want to avoid using glycolic acid with other exfoliants, retinol and vitamin C serums. Healthline's article on glycolic acid and retinol says that you generally won't want to mix the two directly, because that "could, quite literally, be a recipe for irritation," and suggests using them at different times of day or on different days.
That doesn't mean you can never use both. DermNet NZ says AHA preparations "can be alternated with other anti-ageing preparations including retinoid creams and vitamin C" — the operative word being alternated. Cleveland Clinic's retinol page suggests alternating days, or using glycolic acid in the morning and retinol at night. For the full pairing-by-pairing breakdown — retinol, niacinamide, vitamin C, salicylic acid, lactic acid — see our glycolic acid layering guide; for how glycolic acid and retinol specifically compare, see our glycolic acid vs retinol guide.
How Long Before You See a Difference
The best-known figure is a texture result, and it comes with caveats. Healthline cites a 2015 study reporting that 9 out of 10 volunteers using AHAs over three weeks saw significant improvements in skin texture. The study itself had 52 volunteers, tested a four-product regimen (cleanser, eye cream, day and night moisturizers) containing up to 8% AHAs plus vitamins B3, C and E over 21 days, relied on a self-assessment questionnaire for the texture result (87% reported improved texture and 90% improved smoothness), and was run by the manufacturer of the products. It is not a test of a single glycolic acid product.
For tone and pigmentation, Cleveland Clinic says over-the-counter glycolic acid products may take several months of consistent use before skin looks brighter or pigmentation is more even. For acne, Healthline reports, citing Mayo Clinic, that significant improvement can take two to three months and that skipping treatments makes it take longer. We did not find a source giving a timeline for acne marks specifically, so we don't give one.
Beyond that, Medical News Today lists a product that is too strong and too-frequent use among the causes of irritation, so pushing strength or frequency is a more reliable route to irritation than to faster results.
Using It on the Body
Everything above is written for facial application. Underarms, legs, arms and the areas most often targeted for keratosis pilaris or ingrown hairs are a different context, and we did not find a source in this review that sets body concentrations or schedules, so this guide doesn't.
We cover body areas and a step-by-step body routine separately: see glycolic acid for the body and underarms for underarms, KP, and strawberry legs specifically.
For the specific case of choosing a product, our best glycolic acid toners roundup covers the leave-on toner format referenced throughout this guide, if you're deciding what to buy rather than how to use what you already have.
Frequently Asked Questions
How do you apply glycolic acid?
Cleanse, rinse and pat your skin dry first. For a rinse-off product, the American Academy of Dermatology describes the pattern for at-home chemical exfoliators as applying for about 30 seconds and then rinsing well with lukewarm, not hot, water — that is general exfoliator guidance, not advice written for glycolic cleansers specifically. For a leave-on toner or serum, apply it and don't rinse. Follow with moisturizer, and use sunscreen the next day. We found no source comparing damp and dry application, so we make no claim about absorption either way.
How long should I wait to moisturize after glycolic acid?
None of the pages we read for this guide (Cleveland Clinic, DermNet NZ, Medical News Today and Healthline) gives a number of minutes to wait before moisturizing after a leave-on glycolic acid product, so treat any site that gives one with suspicion unless it names its source. The American Academy of Dermatology says to apply moisturizer immediately after exfoliating, which does not distinguish between formats. Our own practical reading: after a rinse-off product, moisturize once you have rinsed and patted dry; after a leave-on toner or serum, wait until skin no longer feels wet or tacky. That is a cue, not a sourced figure.
How often should you use glycolic acid?
Start at once or twice a week and work up gradually. Cleveland Clinic advises starting at once or twice a week and working up to nightly use only if your skin tolerates it. Healthline relays Cleveland Clinic advice to begin with every-other-day use and to avoid products above 15 percent AHA. The FDA page says the industry's Cosmetic Ingredient Review panel judged glycolic and lactic acid products safe for consumers at 10 percent or less and a pH of 3.5 or higher, provided the product protects against sun sensitivity or tells you to use sun protection. A cleanser and a leave-on toner are not the same exposure, so it is reasonable to schedule them differently (our reading).
Should you use glycolic acid in the morning or at night?
Night, for leave-on products. Cleveland Clinic says glycolic acid should be used at night because, like retinol, it increases sensitivity to the sun. DermNet NZ also says leave-on AHA preparations are best applied at night, though it does not state a reason. Medical News Today says the increased sunburn risk is why some prefer night. Some dermatologists use a glycolic cleanser in the morning: in Healthline's article on glycolic acid and retinol, dermatologist Dr. Anna Chacon says she uses glycolic acid in her daytime routine as a cleanser. Either way, the FDA says AHA products can increase sun sensitivity while you use them and for a week afterwards, so sunscreen is part of the routine.
How long do you leave glycolic acid on your face?
It depends on the format. Rinse-off cleansers: the American Academy of Dermatology gives about 30 seconds for at-home chemical exfoliators generally. Leave-on toners and serums: not rinsed at all. At-home peel pads and kits: follow the label, because the FDA says to follow directions carefully and heed warning statements on any cosmetic product. Professional peels: DermNet NZ describes the peel solution being applied for three minutes and then washed off, within a treatment of about 15–20 minutes, at strengths of 20 to 70%. That is a supervised procedure, not a reference point for anything you would use at home.
Can you use glycolic acid with retinol?
Not at the same time, at least at first. Cleveland Clinic says that when you are first starting out you may want to avoid using glycolic acid with other exfoliants, retinol and vitamin C serums. Healthline says you generally won't want to mix glycolic acid and retinol directly because that could be a recipe for irritation, and suggests using them at different times of day or on different days; its dermatologist, Dr. Anna Chacon, says she generally doesn't use both at the same time. Cleveland Clinic's retinol page suggests alternating days, or glycolic acid in the morning and retinol at night.
How long does glycolic acid take to work?
The earliest change the evidence we read describes is texture, with caveats. In a 21-day study of 52 volunteers using a four-product regimen containing up to 8% AHAs plus vitamins, run by the products' manufacturer, 87% reported improved skin texture and 90% improved smoothness on a self-assessment questionnaire; that is a multi-product regimen, not a single glycolic acid product. For pigmentation, Cleveland Clinic says over-the-counter glycolic acid products may take several months of consistent use before skin looks brighter or pigmentation more even. Healthline reports that acne improvement can take two to three months, citing Mayo Clinic.
Can you use glycolic acid on your body?
Yes, glycolic acid is used on the body too, but everything in this guide is written about the face, and we found no source that sets a body schedule. Our dedicated guide to glycolic acid on the body and underarms covers body areas and a step-by-step routine.