Known for its no-nonsense approach to beauty and affordable products, The Ordinary took the beauty world by storm when it launched back in 2016 and has since brought us some of our favourite skincare formulas. One of which is the brand’s lactic acid serums. A chemical exfoliant, lactic acid helps to brighten and exfoliate the skin, whilst reducing signs of sun damage and pigmentation. It’s much more gentle than other exfoliating acids (such as glycolic acid), so it can be a great option to add into a routine for dry and sensitive skin types, or for those using chemical exfoliants for the very first time.
Interested? Keep reading to find out more about the benefits of The Ordinary’s lactic acid serums and how to use them, plus a review from skincare expert and esthetician Grace Day.
What is lactic acid?
Let’s start with the basics—lactic acid is an alpha hydroxy acid (AHA), which is a form of chemical exfoliant. What was once a confusing acronym a few years ago has fast become a staple in so many skincare routines. AHAs work by breaking down the bonds that hold dead skin cells to the skin’s surface, resulting in a gentle and even exfoliation of dull, dry skin.
You’re probably already aware of another AHA, glycolic acid. The key difference to note between lactic and glycolic is that lactic acid has a bigger molecule size, meaning that it’s not as strong on the skin, and making it a better option for sensitive and dry skin types.
What The Ordinary lactic acid serums are available?
The Ordinary has two lactic acid serums available—the difference between them is their strengths. The Ordinary Lactic Acid 5% + HA is the more gentle of the two with a lower concentration of lactic acid. This serum would be a good place to start if you’re concerned about skin sensitivity or if you’ve never used a chemical exfoliant before. The Ordinary Lactic Acid 10% + HA is a more potent option offering stronger exfoliation. It would be best for those whose skin is already used to using chemical exfoliants and have stubborn concerns with skin texture and unwanted pigmentation.
What does the lactic acid from The Ordinary do?
Whether you opt for the 5% serum or the 10% formula, both help to smooth and brighten skin by removing dead skin cells via a gentle chemical exfoliation.
The Ordinary’s lactic acid serums feature just one other active ingredient alongside lactic acid—hyaluronic acid. Hyaluronic acid is a powerful hydrator which benefits the skin by drawing in moisture. It works well alongside lactic acid because once the skin is exfoliated and pores are cleared, the moisture is able to absorb evenr deeper. Plus, since exfoliation can occasionally leave the skin feeling dry or irritated, the addition of hyaluronic acid helps to soothe and restore moisture, preventing any potential dryness or sensitivity.
Benefits of The Ordinary Lactic Acid:
Lactic Acid: Gently exfoliates skin, removing dead skin cells and improving cell turnover, so skin feels smoother and looks brighter.
Hyaluronic Acid: Attracts water and draws it deep into the skin, plumping skin with moisture and improving hydration levels.
Tasmanian Pepperberry Extract: Soothes skin and reduces irritation.
How to use lactic acid:
1. Prep skin by cleansing with a gentle non-exfoliating cleanser and allow skin to dry.
2. Apply a few drops of serum to the skin, gently pressing in with your fingertips.
3. Once the serum has fully absorbed, apply your moisturiser.
How often should I use lactic acid?
The Ordinary’s lactic acid serums should be applied no more than once daily, and should ideally be used in your evening routine.
Can I use The Ordinary Lactic Acid every day?
The Ordinary’s Lactic Acid serums can be used every day, but if daily use leads to irritation or sensitivity, reduce the frequency of use.
What not to mix with The Ordinary Lactic Acid:
Chemical exfoliants like lactic acids are potent active ingredients which can increase skin’s sensitivity. This means it’s important to be wary which ingredients they’re mixed or layered with. Layering too many active ingredients can cause irritation and can make the ingredients ineffective. The following ingredients should not be used alongside lactic acid.
Retinoids
Peptides
Exfoliating acids (glycolic, salicylic, and mandelic)
Niacinamide
Vitamin C
A skincare expert’s verdict:
“I frequently recommend The Ordinary’s lactic acid serums to my clients who come to me with skin concerns like rough texture and hyperpigmentation or acne scarring. Their skin is often too sensitive to deal with a stronger exfoliant like glycolic acid or a physical scrub, so I like to start them off with something gentle,” says Day. “With that said, it’s a very effective serum and the results are still really impressive. With daily use, most people find their skin looks brighter and more even, and will have a smoother, softer texture.”
