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Glycolic acid

Glycolic acid odos priežiūroje: Exfoliant, keratolytic. Ką jis daro ant odos, kiek iš tiesų stiprūs įrodymai už teiginio, koncentracijos įprastai naudojant, kas į jį reaguoja ir kokia jo padėtis nėštumo metu bei saulėje. Ant etiketės jis nurodomas kaip Glycolic Acid.

Šveičiamosios rūgštysExfoliant, keratolyticĮrodymai:Stiprus

Etiketėje:Glycolic Acid. Taip pat vadinama:AHA, alpha hydroxy acid, fruit acid.

Tai sudedamųjų dalių informacinė medžiaga, o ne diagnozė ir ne gydymo planas. Ji aprašo, kas yra tos medžiagos ir ką patvirtina paskelbti įrodymai; ji nepasako, kas yra jūsų odai ar ką ant jos tepti. Išbėrimas, kuris plinta, skauda, varva, nenurimsta arba kurį lydi bloga savijauta, yra priežastis kreiptis į gydytoją ar vaistininką, o ne keisti serumą.

Kas tai yra

The smallest of the alpha hydroxy acids, a two-carbon acid originally isolated from sugar cane and now made industrially. Its small size is the whole point: of the common AHAs it crosses the outer skin fastest, which makes it both the most effective and the most likely to sting. It is sold in cosmetic strengths for home use and in far higher strengths as a professional peel, and those two things behave nothing alike.

Ką jis daro ant odos

It weakens the bonds holding dead cells together at the surface, so the outermost layer sheds more evenly instead of building up in patches. The visible result is a smoother, more even, more light-reflective surface within days. Over longer courses at higher strengths, studies also report changes deeper down — more ground substance and collagen in the dermis — which is the mechanism behind its use for fine lines and sun-damaged texture rather than just glow.

Kiek verti įrodymai

Įrodymai:Stiprus

The surface effect is not in doubt: it is measurable, reproducible and quick. The deeper anti-ageing effect is supported by smaller studies, usually at peel strengths and over months, so a home toner is not the same intervention. Free acid at a low pH is what does the work, which is why two products with the same percentage on the front can perform very differently.

Kaip jis naudojamas

Evening, on dry skin, starting two or three nights a week and building up only if nothing stings. A leave-on serum or toner at 5-10% is a normal consumer strength; anything much stronger belongs to a trained operator. Stop before waxing, threading or a laser appointment, and stop while skin is broken, sunburnt or already peeling.

Tipinė koncentracija įprastai naudojant:5-10% in consumer leave-on products. Tai yra rinkos aprašymas, o ne rekomendacija, ir tai nėra dozė.

Kas į tai reaguoja

Stinging in the first minute is common and usually settles. Persistent burning, tightness, shininess or new sensitivity to products that were fine last month means the barrier is over-exfoliated, and the fix is to stop for two weeks and use plain moisturiser. People with rosacea, eczema or a compromised barrier tolerate it poorly.

Nėštumas ir žindymas

Paprastai laikoma, kad tai normalu

Topical AHAs are poorly absorbed and are generally treated as acceptable in pregnancy, unlike oral or high-strength professional peels. Skin is also more reactive in pregnancy, so this is a good time to use less rather than more, and to check with your midwife or clinician first.

Saulės šviesa

Jautresnis saulei

AHA use increases sensitivity to ultraviolet light and that sensitivity persists for about a week after you stop. Daily sunscreen is not an upsell here, it is part of the treatment: without it you undo the pigment benefit you were exfoliating for.

Taisyklės ir ženklinimas

The Cosmetic Ingredient Review has concluded glycolic acid is safe for consumer products at concentrations up to 10% at a pH of 3.5 or above, and at higher concentrations only for brief professional use. Consumer products in the EU sit far below salon peel strength, and sun-protection wording is the standard expectation on an AHA label.

Su kuo jis dera ir su kuo ne

It pairs badly with a retinoid on the same night for most people — not because of a chemical conflict but because the irritation stacks. Alternate nights instead. It pairs well with a plain moisturiser applied ten minutes after, and with sunscreen the following morning, which is not optional.

Vienas dalykas, kurį žmonės supranta neteisingai

The myth is that the percentage on the front of the bottle tells you the strength. It does not. A 10% glycolic product buffered to pH 5 has far less free acid available than a 5% product at pH 3.5, so it does less. Percentage without pH is half a number, and the brand that gives you both is telling you more than the brand that shouts louder.

Šaltiniai: ES Kosmetikos reglamentas (EB) Nr. 1223/2009 ir jo priedai, kaip paskelbta Europos Komisijos CosIng duomenų bazėje, dėl kiekvieno teiginio apie tai, kas leidžiama, apribota ar uždrausta · Vartotojų saugos mokslinio komiteto (SCCS) nuomonės ir Cosmetic Ingredient Review (CIR) saugos vertinimai dėl koncentracijos pozicijų · standartinė dermatologijos žinyninė medžiaga apie mechanizmą, toleravimą ir kontaktinės alergijos modelius · patikrinta2026-09-06. Tiesioginės nuorodos sąmoningai praleistos ten, kur nepavyko patvirtinti stabilaus viešo URL.

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