Yes, you can use glycolic acid and hyaluronic acid together, and they suit each other well. Glycolic acid goes first because it loosens the dull, dead cells sitting on the surface. Hyaluronic acid goes second and puts water back, so your skin feels comfortable instead of tight. Keep the pair for night and wear sunscreen the next day.
Can you use glycolic acid and hyaluronic acid together?
You can. The two share the word "acid" and almost nothing else. Glycolic acid is an exfoliant.
Hyaluronic acid doesn't exfoliate at all. It's a humectant, which means it holds water against your skin.
Because they do different jobs, they don't compete or cancel each other out. If anything, one covers for the other. Exfoliating can leave skin feeling a bit dry and tight, and a hydrating layer straight after takes the edge off that.
Does glycolic acid go before or after hyaluronic acid?
Glycolic acid goes first, on clean, dry skin. It needs direct contact with the surface to work. A review in the journal Molecules describes how alpha-hydroxy acids weaken the bonds holding dead cells together so they shed more easily. A layer of serum underneath would only get in the way.
Hyaluronic acid goes on after. Think of it as clearing a path and then watering it. With the old surface cells out of the way, the water-holding layer sits on fresher skin, and that's what gives the smooth, dewy look people are after. We go deeper on the exfoliating half in our guide to glycolic acid and texture.
How to layer them, step by step
Do this at night:
- Cleanse and pat your face fully dry.
- Apply your glycolic acid toner or serum. Skip the eye area.
- Wait a minute or two until it has sunk in.
- Apply hyaluronic acid. A light mist of water first helps it hold more.
- Finish with a moisturiser to keep that water in.
The last step matters more than it looks. Hyaluronic acid holds water, but it doesn't stop water leaving. A cream over the top does that, which is the same water first, seal second idea behind pairing hyaluronic acid with ceramides.
If you'd rather not add another bottle, a hydrating sheet mask with sodium hyaluronate can stand in for the serum step on exfoliating nights.
Should you use glycolic acid in the morning or at night?
Night is the better choice. Glycolic acid makes skin more sensitive to the sun. The US Food and Drug Administration reports that after four weeks of AHA use, sensitivity to UV reddening rose by 18 percent, and its suggested label wording tells people to keep using sun protection for a week after they stop.
In Australia that isn't a small detail. Cancer Council Australia recommends SPF50 or SPF50+ broad-spectrum sunscreen whenever the UV level is 3 or above, which covers most of the year in most of the country. If glycolic acid is in your routine, make that a daily habit and not a beach-day one.
Hyaluronic acid has no such limit. Use it morning and night if you like.
How often should you use the two together?
Start with glycolic acid two or three nights a week and see how your skin feels after a fortnight. Hyaluronic acid can go on every day, including the nights you skip the exfoliant.
Strength matters too. The same FDA page notes that an expert safety panel considers glycolic acid products fine for home use at 10 percent or less with a pH of 3.5 or higher. Most toners sit around 5 to 7 percent, which is plenty for a beginner.
Watch for stinging that lasts, redness or flaking. Those are signs to drop back to once a week, not to push through. If your skin already feels raw, pause the glycolic acid and read how to look after a worn-down skin barrier first.
What should you never mix with hyaluronic acid?
Nothing, really. Hyaluronic acid is about as easygoing as skincare gets, and it sits happily with retinol, vitamin C, niacinamide and exfoliating acids. We cover the basics in our hyaluronic acid guide.
The ingredient to be careful with is the glycolic acid. Don't stack it with retinol or another strong exfoliant on the same night while your skin is still getting used to it. Alternate nights instead and let hyaluronic acid be the constant.
Prefer to watch? We turned this into a 30 second short: glycolic acid or hyaluronic acid first.
Further reading: Can You Use Hyaluronic Acid With Retinol? A Layering Guide
So the routine is short: exfoliate first, hydrate second, moisturise, and wear sunscreen in the morning. Go slowly with the glycolic acid and you can be generous with the hyaluronic acid.
FAQ
Can I use glycolic acid and hyaluronic acid together?
Yes. Glycolic acid exfoliates and hyaluronic acid hydrates, so they don't interfere with each other. Using hyaluronic acid afterwards helps skin feel less tight.
Which goes first, glycolic acid or hyaluronic acid?
Glycolic acid first, on clean dry skin. Give it a minute or two, then apply hyaluronic acid and finish with a moisturiser.
Should I use glycolic acid in the morning or at night?
At night. Glycolic acid makes skin more sensitive to the sun, so use it in the evening and wear SPF50 or higher sunscreen the next day.
What should I never mix with hyaluronic acid?
Hyaluronic acid gets along with almost everything. The one to be careful with is glycolic acid, which is best kept away from retinol and other strong exfoliants on the same night.
How do I use a glycolic acid serum?
Apply a thin layer to clean, dry skin two or three nights a week and avoid the eye area. Follow with a hydrating step and a moisturiser, and use sunscreen every morning.
