10% Lactic Acid + 1% Hyaluronic Acid
AHA Peeling Concentrate
AHA Peeling Concentrate
Loved by 2,500+ customers
- Lactic acid second of only nine ingredients
- Buffered, and hydrating while it works
- One or two evenings a week, left on overnight
- 100% natural origin · COSMOS Natural
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Description
Description
An overnight peel with 10% lactic acid, for dullness, rough texture, blemish marks and dark spots. Lactic is the larger, slower AHA — it works at the surface rather than driving straight down, which is why 10% of it is something you can leave on overnight rather than time with a stopwatch.
Nine ingredients in total, and you can read every one on this page. The acid, three humectants including 1% hyaluronic acid, potassium hydroxide to buffer the pH, and organic white tea and sage leaf extract. 100% of natural origin, certified COSMOS Natural by Ecocert, with no perfume added.
How to use
How to use
One or two evenings a week, no more. Cleanse, dry your skin properly, then apply a thin layer and leave it on overnight. There's nothing to rinse and no timer to watch.
Sunscreen the next morning, every time. Skip your retinoid or any other acid on the nights you use this, and keep it away from the eye area. Patch test for 24 hours before the first full use.
Who is it for?
Who is it for?
Dull, tired-looking skin, rough texture, and the marks left behind by old blemishes. It suits people who already use acids and want something stronger than a daily toner, without going near a salon peel.
If you've never used an acid before, start at once a week and see how your skin takes it. There's no added fragrance and nothing on the formula that has to be declared as an allergen. Gluten free, nut free and vegan.
Shipping & returns
Shipping & returns
US orders ship with tracking. Most orders arrive within 2–5 business days after fulfillment. Enjoy free shipping on orders over $49.
If your order arrives damaged, defective, incorrect, or missing an item, please contact us within 30 days of delivery with your order number and photos where applicable. We'll review the issue and arrange a replacement or refund where appropriate.
Ingredients / INCI
How to use it
One or two evenings a week. More often isn't better and your skin will tell you so.
Clean, dry skin at night
Dry properly before you apply. Damp skin changes how an acid behaves, and not in a way that helps.
Thin layer, leave it on
Nothing to rinse and no timer. It's built to work overnight while your skin does its own repair.
Sunscreen in the morning
Freshly exfoliated skin burns faster. This is the step that decides whether the dark spots come back.
On the nights you use this, skip your retinoid and any other acid.
A peel, or a daily acid
These are two different jobs. This one is the weekly reset, not the everyday step.
| Feature | AVNOIA | Typical at-home AHA peel | Daily acid toner |
|---|---|---|---|
| The acid | 10% lactic acid | Often glycolic at 10% or more | Usually 5% or less |
| Ingredients in total | Nine | Varies | Varies |
| Acid buffered | Yes, with potassium hydroxide | Varies | Varies |
| Hydration built into the formula | 1% hyaluronic acid plus glycerin | Varies | Varies |
| How often | One or two evenings a week | Weekly | Most evenings |
| Added fragrance | None | Varies | Varies |
| Natural-origin ingredients | 100% | Varies | Varies |
| Independent certification | Ecocert COSMOS Natural | Varies | Varies |
Comparison columns describe the category in general, not any specific brand.
What's inside and why it's there
Nine ingredients in total, 100% of natural origin and 2% organic, certified COSMOS Natural by Ecocert. No added fragrance, nothing on the allergen list. Gluten free, nut free and vegan, no GMO ingredients, recyclable packaging.
Lactic Acid
Second of nine ingredients. Lactic is the bigger, slower AHA — it works on the surface rather than pushing deep, which is what makes 10% of it something you can sleep in.
Hyaluronic Acid
Sodium hyaluronate with glycerin, butylene glycol and pentylene glycol behind it. Exfoliating costs skin water, so the hydration is built into the same bottle rather than left to whatever you put on afterwards.
Organic White Tea + Sage
Both from organic farming, and the only two botanicals in the formula. Nothing else has been added for the look of the label.
Questions people ask before buying
One or two evenings a week. This is a peel, not a nightly step, and using it more often won't get you there faster — it'll just leave your skin sore. Start at once a week if acids are new to you.
Yes, the morning after and every morning. Exfoliated skin is more sensitive to UV, and sun exposure brings pigmentation straight back. Skipping it undoes the work.
Not on the same night. Give this one the evening to itself and go back to your retinoid or daily acid the next night. Layering actives is the usual reason people end up with a compromised barrier.
It shouldn't. A brief tingle on application is normal, visible flaking is not. If your skin stings for more than a minute or feels raw in the morning, rinse it off and go back to once a week.
You don't have to — there's 1% hyaluronic acid and glycerin in the formula for exactly that reason. If your skin runs dry, a cream over the top is fine and won't stop it working.
It's a proper strength, but 10% lactic and 10% glycolic are not the same thing. Lactic acid is the larger molecule and works more slowly at the surface, and the potassium hydroxide here buffers the pH. That combination is what makes it safe to sleep in.
No, it's deliberate. One acid, three humectants, a pH buffer and two organic botanicals. Pentylene glycol does double duty as a humectant and keeps the formula stable, which is why there's no long preservative list.
Faintly sweet, and that's the formula itself — no perfume has been added. There's nothing in it that has to be declared as an allergen, which is worth knowing if scented products usually bother you.
Yes to vegan and cruelty free, and it's certified COSMOS Natural by Ecocert Greenlife — 100% natural origin, 2% organic. It's also gluten free, nut free, free of GMO ingredients, and the bottle is recyclable.
Build the routine
Cleanse first, then this, and nothing else on top. Sunscreen the next morning, every morning.
5% Urea + 2% Panthenol Body Cream
Why people stay with it
- Nine ingredientsOne acid, three humectants, a buffer and two organic botanicals. That's the whole list.
- 10% lactic, bufferedStrong enough to be worth doing, gentle enough to leave on overnight.
- 100% natural originCertified COSMOS Natural by Ecocert, with no added fragrance and nothing to declare.
Made for your everyday routine
Thoughtfully formulated skincare and haircare designed to make your daily routine feel simple, effective and enjoyable.
Free shipping over $49