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Lactic acid

Lactic acid ādas kopšanā: Exfoliant, humectant. Ko tas dara uz ādas, cik spēcīgi patiesībā ir pierādījumi aiz apgalvojuma, koncentrācijas parastā lietošanā, kas uz to reaģē un kāda ir situācija grūtniecības laikā un saulē. Uz etiķetes tas parādās kā Lactic Acid.

Eksfoliējošās skābesExfoliant, humectantPierādījumi:Spēcīgs

Uz etiķetes:Lactic Acid. Sauc arī:AHA, alpha hydroxy acid.

Šī ir sastāvdaļu uzziņu informācija, nevis diagnoze un nevis ārstēšanas plāns. Tā apraksta, kas ir šīs vielas un ko apstiprina publicētie pierādījumi; tā nepasaka, kas ir jūsu ādai vai ko uz tās likt. Izsitumi, kas izplatās, sāp, tek, nepāriet vai ko pavada slikta pašsajūta, ir iemesls apmeklēt ārstu vai farmaceitu, nevis nomainīt serumu.

Kas tas ir

An alpha hydroxy acid with a bigger molecule than glycolic acid, so it moves into the skin more slowly and generally stings less. It is also one of the substances skin makes itself: lactate is part of the natural moisturising factor, the mix of small water-binding molecules inside the outer cells. That dual identity is why it both exfoliates and hydrates, which most acids do not.

Ko tas dara uz ādas

Like other AHAs it loosens the dead surface layer so it sheds evenly. Unlike them it also raises the water content of that layer directly, because lactate holds water. On the body it is the standard answer for the rough, bumpy or scaly skin of the upper arms and shins, where a 10-12% lotion both softens the plugs and stops the skin drying back out between applications.

Cik vērti ir pierādījumi

Pierādījumi:Spēcīgs

Body lotions in the 10-12% range have a long clinical record in dry, scaly and rough skin and this is the best-supported use. For pigment and fine lines the evidence is thinner than for glycolic acid, mostly because less of it has been done. As a gentler entry point for someone who cannot tolerate glycolic acid, the reasoning is sound and the tolerability difference is real.

Kā to lieto

On the face, an evening serum or toner in the 5-10% range, a few nights a week. On the body, a 10-12% lotion daily is normal and works better than intermittent use. Apply body lotion to skin still damp from the shower, which is the single change that makes the biggest difference in a dry Nordic winter.

Tipiskā koncentrācija parastā lietošanā:5-12%, higher in body lotions. Tas ir tirgus apraksts, nevis ieteikums, un tā nav deva.

Kas uz to reaģē

Milder than glycolic acid for most people but still an acid: stinging on freshly shaved legs, on eczema patches or around the nostrils is common. It should not be used on cracked heels or fissured skin, where it will burn and delay healing.

Grūtniecība un barošana ar krūti

Parasti tiek uzskatīts par pieņemamu

Treated the same way as other topical AHAs: poorly absorbed, generally considered acceptable, and worth mentioning to your midwife anyway. Skin sensitivity often changes in pregnancy, so a product you tolerated before may sting now.

Saules gaisma

Jutīgāks pret sauli

Same as the other AHAs — increased ultraviolet sensitivity during use and for roughly a week after. On the body this matters less in winter but it matters a great deal on a summer holiday.

Noteikumi un marķējums

Covered by the same alpha hydroxy acid framework as glycolic acid: consumer concentrations and minimum pH are constrained, higher strengths are professional-use, and sun-protection wording is expected on the label.

Ar ko tas sader un ar ko ne

Lactic acid and urea in the same body lotion is a genuinely good combination, because one exfoliates and both hold water. On the face, keep it away from a retinoid on the same night unless you already know you tolerate both.

Viena lieta, ko cilvēki saprot nepareizi

The myth is that lactic acid is made from milk, so a product containing it cannot be vegan. Cosmetic lactic acid is produced by fermenting plant sugars — beet, corn, cane — with bacteria, and the finished molecule is identical whatever it came from. The word "lactic" records where chemists first found it in the 18th century, not where the bottle on your shelf got it.

Avoti: ES Kosmētikas regula (EK) Nr. 1223/2009 un tās pielikumi, kā publicēts Eiropas Komisijas CosIng datubāzē, attiecībā uz katru apgalvojumu par to, kas ir atļauts, ierobežots vai aizliegts · Patērētāju drošības zinātniskās komitejas (SCCS) atzinumi un Cosmetic Ingredient Review (CIR) drošības novērtējumi attiecībā uz koncentrāciju nostājām · standarta dermatoloģijas uzziņu materiāli par mehānismu, panesamību un kontaktalerģijas modeļiem · pārbaudīts2026-09-06. Tiešās saites ir apzināti izlaistas tur, kur nebija iespējams apstiprināt stabilu publisku URL.

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