How to Use The Ordinary Lactic Acid


The Ordinary Lactic Acid 10% + HA 2%The Ordinary Lactic Acid 10% + HA 2%


Without a doubt, Lactic Acid is one of our favourite chemical exfoliants to use on all skin types.

Out of all the chemical exfoliating ingredients, we rate Lactic Acid highly due to its large molecule size and its relative gentleness.

In this guide, we’re shining the spotlight on The Ordinary. Specifically, we’re here to explore how to use The Ordinary Lactic Acid.

The Ordinary offers two products of this nature: The Ordinary Lactic Acid 5% + HA 2% and The Ordinary Lactic Acid 10% + HA 2%.

The Ordinary Lactic Acid 10% vs 5%

The difference between The Ordinary Lactic Acid 5% + HA 2% and The Ordinary Lactic Acid 10% + HA 2% is the concentration of Lactic Acid in the formula.

‘The 5% concentration is suitable for beginners who have little experience with chemical exfoliation, and can start by introducing a lower concentration into their routine, and moving to a higher concentration if needed,’ explains Prudvi Kaka, Chief Scientific Officer of DECIEM.

‘The 10% concentration is suitable for experienced users of chemical exfoliants who have developed skin tolerance to higher concentrations.’

How does The Ordinary Lactic Acid work?

So, how does The Ordinary Lactic Acid work? Being a chemical exfoliant—more specifically, an alpha-hydroxy acid—Lactic Acid has the ability to loosen the sticky ‘glue’ that holds dead skin cells to the surface of your skin.

That’s why an application of a product with Lactic Acid can reveal a brighter and smoother-looking complexion.

You may wonder, ‘Should I use The Ordinary Lactic Acid for blackheads?’ Kaka explains:

AHAs such as Lactic Acid will help to improve [blackhead] appearance through superficial exfoliation, but beta-hydroxy acids (BHAs) are a more suitable choice for this concern.

This is because, while AHAs are water-soluble, BHAs are lipid- (oil-) soluble, which means that they will be able to mix with the skin’s lipids and work both on the surface and inside pores, to help clear congestion.

The most popular BHA in skincare is Salicylic Acid, which we offer in The Ordinary in different formats.

How to use The Ordinary Lactic Acid

We know you’re searching for ‘The Ordinary Lactic Acid 10 how to use’ and ‘The Ordinary Lactic Acid 5 how to use’, so we’re here to educate you.

The Ordinary Lactic Acid is technically a serum that can be added to your skincare regimen. The brand recommends using this product at night, as exfoliating acids may cause sun sensitivity if applied in the morning.

As for how often to use The Ordinary Lactic Acid, you can use it every day. With all chemical exfoliating products, it’s a good idea to introduce them to your skin slowly. Try using Lactic Acid every second day before building up to daily use.

What are The Ordinary Lactic Acid ingredients?

Both The Ordinary Lactic Acid 5% + HA 2% and The Ordinary Lactic Acid 10% + HA 2% contain mostly Water, Lactic Acid, Glycerine, and Sodium Hyaluronate Crosspolymer. Tasmania Pepperberry, which is known to reduce skin irritation, is also featured in both formulas.

How to dilute Lactic Acid The Ordinary

While we recommend starting with The Ordinary Lactic Acid 5% + HA 2% rather than the 10% formula, you can also dilute either product to lower its potency.

A good way to dilute Lactic Acid is to mix it with another serum or moisturiser—one containing hyaluronic acid works well.

But don’t try to ‘dilute’ Lactic Acid with something that contains retinol or another acid. You’ll end up with irritation, not exfoliation.

Can I use The Ordinary Niacinamide and Lactic Acid together?

If you’re looking to pair The Ordinary Lactic Acid and niacinamide, then we have good news for you: you sure can use the two together in a skincare routine.

Niacinamide has the fantastic ability to address congestion in the skin, making it a top choice for getting rid of little blemishes that appear from time to time.

There’s only one thing to take note of: ‘We do not recommend combining [Lactic Acid] with our 100% Niacinamide Powder, as we do not recommend mixing the powder with formulations with a pH of 5 or lower,’ says Kaka.

Can I use The Ordinary Lactic Acid and vitamin C together?

If you’re wondering if you can use The Ordinary Lactic Acid and vitamin C together, we have to caution you here.

‘We do not recommend combining direct acids and vitamin C (direct or ethylated) in the same regimen to avoid the potential of developing skin sensitivities,’ warns Kaka.

‘If you wish to incorporate both into your regimen, we suggest [separating] the two products into AM and PM regimens.’

Find out more about layering The Ordinary products in the YouTube video below...



And there you have it! We hope you’ve learned a thing or two after reading this comprehensive guide on how to use The Ordinary Lactic Acid.

Find out more about The Ordinary range in the guides below...




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