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 multitasker 

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

Lactic acid, the gentlest exfoliant 

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

  • Affinity with sensitive skin : perfect !

Salicylic acid, the enemy of spots and scars 

It is its purifying properties that make this acid one of the favorites of the skins with imperfections. It is formidable for unclogging pores and prevent blackheadsIt is ideal for daily use 2 to 3 times a week (even 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

Retinoic acid, the anti-ageing ingredient 

This vitamin A derivative does the opposite of most acids: instead of refining the skin, it thickens the last layer of skin to better fill in wrinkles. Anti-aging active ingredient par excellence, it knocks out the enzymes responsible for skin aging and regulates melanocytes (these 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.

Ascorbic acid, the glow getter 

This acid is vitamin C. Super protective of our skin capitalIt acts as a real vacuum cleaner for toxic substances (such as pollution particles, cigarettes...), while stimulating our production of collagen fibers. This will keep your complexion bright and your skin young 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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