The Ordinary The Ordinary Lactic Acid 10% + HA AHA serum for mild exfoliation The Ordinary swatch of Lactic Acid 10% AHA serum

Lactic Acid 10% + HA

A high-strength lactic acid superficial peeling formulation

6.70 CAD
Lactic Acid is an alpha hydroxy acid that exfoliates the skin. This 10% formulation offers mild exfoliation and is supported with a purified Tasmanian pepperberry known to reduce signs of inflammation and sensitivity that is often associated with exfoliation.

This formula contains a studied Tasmanian Pepperberry derivative to help reduce irritation associated with acid use. This derivative is of plant origin and varies in colour seasonally and this colour variation may be apparent in the formula from time to time.

Contraindications: Lactic Acid should not be used on sensitive, peeling or compromised skin. Please refer to additional sun protection note and other warnings in provided Directions.

This pH of this formula is approximately 3.8. Lactic Acid has a pKa of 3.8 and pKa is the most important aspect to consider in formulating with acids. pKa implies acid availability. When pKa is close to pH, there is an ideal balance between salt and acidity, maximizing effectiveness of the acid and reducing irritation. Higher pH numbers in such a case would increase salt which counter-intuitively would make the formula even more irritating than if the formula was more acidic.

Note: While Lactic Acid can result in quick visible benefits, we generally suggest indirect forms of skin exfoliation in favour of direct forms such as this formula due to potential inflammation and sensitivity associated with acids. Please refer to NIOD's Non-Acid Acid Precursor for such a reference.
Apply once per day, ideally in the PM. Can be diluted with other treatments to reduce strength until skin develops tolerance. Do not use on sensitive, peeling or compromised skin. Avoid contact with eyes. Contact of the product with the skin must be of limited frequency or duration. If irritation occurs, cease use and consult a physician. Use only as directed on unbroken skin. Patch testing prior to use is advised. Keep out of reach of children. Sunburn Alert: This product contains an alpha hydroxy acid (AHA) that may increase your skin's sensitivity to the sun and particularly the possibility of sunburn. Use a sunscreen, wear protective clothing, and limit sun exposure while using this product and for a week afterwards.

Sunburn Alert: This product contains an alpha hydroxy acid (AHA) that may increase your skin's sensitivity to the sun and particularly the possibility of sunburn. Use a sunscreen, wear protective clothing, and limit sun exposure while using this product and for a week afterwards. See how to combine multiple formulations from The Ordinary in a single regimen

Patch tests are an easy way to help predict if you may experience a negative initial reaction to a new product. It is recommended to perform a patch test before incorporating any new product into your regimen. We have outlined a general method for conducting your own patch test below based on the type of product.

  • Apply a small amount of the product onto a clean area of skin on the upper forearm.
  • Keep the area dry.
  • If the product has a specified duration of use, rinse off after this time has elapsed. Otherwise rinse off after 24 hours.
  • If any redness, burning, itching, blistering or irritation is observed at any time throughout the test, do not use the product.

For more product specific information, review our Patch Testing Guide.

Aqua (Water), Lactic Acid, Glycerin, Pentylene Glycol, Propanediol, Sodium Hydroxide, Sodium Hyaluronate Crosspolymer, Tasmannia Lanceolata Fruit/Leaf Extract, Acacia Senegal Gum, Xanthan Gum, Isoceteth-20, Trisodium Ethylenediamine Disuccinate, Ethylhexylglycerin, 1,2-Hexanediol, Caprylyl Glycol.

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Rated 5 out of 5 by from It made me skin more even! Ever since I discovered Ordinary, I've tried multiple products from the line, to see what works the best. I got rid of acne, thanks to ordinary stuff, but I still "suffer" from textural irregularities. BUT lactic acid is really helping me. My skin feels and looks more even and smooth. What I also love about this product, it does NOT dry my skin at all like most of the products (even if the serum is designed to hydrate lol). I dont feel the urgent need to moisturise (I do it anyways, but with super light moisturisers). I use lactic acid every evening for about a month now and I'm pretty sure I found my pm routine, thanks to this. I must mention that I have combination skin and not sensitive at all, so if you have sensitive skin, idk if daily use of lactic acid will be fine for you! But otherwise, I totally recommend.
Date published: 2021-05-04
Rated 5 out of 5 by from tolles Produkt ich benutze das Produkt schon seit einiger Zeit und bin sehr zufrieden , ich habe fettige Gesichtshaut, und sehe nach dem Auftragen des Peeling klar , erfrischend und strahlend aus, meine Haut verträgt das Produkt super , zudem trage ich das Produkt an meine Arme auf, dort habe ich alte Pickelnarben und Unebenheiten, dass Produkt hilft auch dort , einfach nur Super. Daumen hoch , für die Wirkstoffe und das Preisverhältnis
Date published: 2021-05-01
Rated 3 out of 5 by from What am I doing wrong? I really want to like this. I love other Ordinary products so much. This doesn't seem to work for me. I don't use it every day. I started about 2 months ago, I use it 2 times a week at night, than use moisturizer on top. Instantly feel irritated, redness and bumps on my face for the next few days. Am I doing something wrong? They did say I could dilute with other treatments, any idea which are some serums that will compliment this.
Date published: 2021-04-30
Rated 5 out of 5 by from The best My best friend who followed SkinCareByHyram’s tip got me this for Christmas!(is May rn) and let me tell you, this is magic in a bottle. I started using it every night after washing my face and before putting some moisturizer(oily face) and I got the cleanest skin I EVER got. After I while I started stressing and working/studying so I loss track BUT every time, every-single-time, I got redness/breakout I use it at night and EVERYTHING disappears next day. I never buy stuff but I need to get a second bottle of this one.
Date published: 2021-04-30
Rated 5 out of 5 by from Game changer WOW... This has been amazing. A friend recommended I try it along with the Niacinamide and it has completely changed my skin. I was scared it was going to dry my skin out as I have always had problems with dry skin especially around my nose but these products have actually hydrated my skin. Since starting these I no longer have to use heavy creams or have dry skin. I totally recommend trying this, especially given the price point.
Date published: 2021-04-23
Rated 5 out of 5 by from Love it This is the second bottle, 2 weeks that I did not use the product and waited for the delivery of the second order were terrible. I have other acids as well, but they do not work for me, although many are 3-5 times more expensive then this one. I had a feeling that the skin was not clean, pores were clogged, makeup did look good on me. I use it 3 times a week pm. The effect for me: the skin is clean, I do not feel the texture of the skin when I run my finger along my nose and chin. The face glows in the morning! :) Thank you so much for making affordable tools that work!
Date published: 2021-04-19
Rated 5 out of 5 by from Love this! I have had this product for over a month now, and I'm glad to say that I can finally see results! I have pretty good skin overall, but I bought this because I could feel small bumps on my cheeks and see a couple black heads under my nose (my exfoliation game is not on point...). Since this was my first time with chemical exfoliation, the first few times I mixed this serum with hyaluronic acid to minimise the sting. It didn't really sting much - and if it did, it was gone in 5 seconds. I use it 2-3 times a week, and my skin is much brighter and has a lovely glow in the morning! I also had weird ingrown hair marks on my chin which have significantly lightened.
Date published: 2021-04-08
Rated 5 out of 5 by from UNREAL.. BRUHHHHH....!! i bought this product about a month ago not really knowing what it would actually do, but hoping to solve my pigmentation issues, i suffered pretty bad cysts around my chin last year and it left me with visible dark spot ... this product reduced it all! MY CARAMEL SKIN IS EVEN! i get compliment all the time! if you have pigmentation issues or acne scars .. get this baby it will fix it all for you :)
Date published: 2021-04-08
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