Beauty Files

Glycolic, salicylic, lactic… Which type of acid is best for my skin?

If you think that using acid is only for experts, think again! Used correctly, some acids can actually work wonders on sensitive skins. Which ones to use? How? When? Our guide is required reading if you want to benefit from the ‘wow’ effects of using the right acid on your skin. 

Glycolic acid, the great multi-spot champion 

L'glycolic acid is a member of the fruit acid family. Thanks to its low molecular weight, which is able to penetrate deep into the skin, it is considered a fairly powerful exfoliating agent, used in professional peels in particular. Rely on it to target the following issues: blurred complexion, pigment spots, pimples and traces of old pimples, wrinkles.

  • Affinity with sensitive skin To be avoided

Naturally produced by the skin, this postbiotic (made by the good bacteria in your epidermis) eliminates bad bacteria by lowering skin pH. The result is calmed rednessand a reinforced skin shield and a clearer complexion. Depending on its concentration, some of lactic acid's actions will vary: at 2% it can moisturize and plump, and at 5% and above it can act as a gentle exfoliant. Perfect for correct skin texture !

  • Affinity with sensitive skin : perfect !

It is its purifying properties that make this acid one of the favorites of skins with imperfections. It is formidable for unclogging pores and prevent blackheadsSalicylic acid is ideal for daily use 2 to 3 times a week (or more if the skin is thick and the concentration is low), for skin that tends to mark easily.

  • Affinity with sensitive skin : quite good, even excellent in small concentrations

This vitamin A derivative does the opposite of most acids: instead of refining the skin, it thickens its top layer to better fill in wrinkles. An anti-aging active par excellence, retinoic acid knocks out the enzymes responsible for skin aging and regulates melanocytes (the mini-machines that produce melanin), to better prevent brown spots.

  • Affinity with sensitive skin: at 0.2% everything is fine. Beyond that, it is better to avoid.

This acid is vitamin C. Super protective of our skin capitalascorbic acid acts as a veritable vacuum cleaner for toxic substances (such as pollution particles, cigarettes...), while stimulating our production of collagen fibers. So you can maintain a luminous complexion and youthful-looking skin for longer. Use it from the age of 25/30 for a combination of radiance and anti-aging prevention.

  • Affinity with sensitive skin: to avoid

Your questions 


Can you combine products containing different acids or is that dangerous? 

As a general rule, we advise you to avoid... But it all depends on which acid(s) we're talking about, as well as the level of concentration in the formula and other active ingredients that can "temper" the action of the acid in question. Typical example: you realize that your cleanser contains salicylic acid and then you use a retinol-based serum. Chances are, the concentration of salicylic acid in that cleanser is very low. And if you haven't noticed any redness, heating or dehydration, then everything is fine. But if in doubt, ask us ;-)

How often can I use acid-based products? 

We cannot give you a precise answer because too many parameters come into play: the integral composition of the product, which may combine other exfoliating/stimulating active ingredients, your sensitivity and the other skin care products you use on a daily basis. If you are not sure, contact us.


Hyaluronic acid ? 

We haven’t mentioned hyaluronic acid in this article simply because, contrary to the others, it doesn’t have a peeling effect. But it is an excellent, hydrating molecule for all skin types so we can’t recommend it highly enough! 

Do you still have questions? Do not hesitate to ask us directly via our chatright away, right now :-)

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