{"product_id":"tartaric-acid","title":"Tartaric Acid Powder – Gentle AHA Exfoliant \u0026 pH Adjuster","description":"\u003cp\u003eTartaric acid (INCI: \u003cem\u003eTartaric Acid\u003c\/em\u003e | CAS: 87-69-4) is a naturally occurring dihydroxy dicarboxylic acid (AHA) sourced primarily from grapes and tamarinds. It exfoliates by weakening the desmosomes — the protein bonds that hold dead skin cells (corneocytes) to the surface — allowing them to shed more evenly without physical abrasion. Because its molecular weight is higher than glycolic or lactic acid, it penetrates the stratum corneum more slowly, delivering a gentler exfoliation that’s well-tolerated by dry, sensitive, and reactive skin types.\u003c\/p\u003e\u003cp\u003eWhat makes tartaric acid especially useful in formulation is its dual function: it exfoliates \u003cem\u003eand\u003c\/em\u003e adjusts pH. A stable, low pH is critical for keeping AHAs active, vitamin C effective, and preservative systems functioning correctly. Tartaric acid helps you hit and hold that target pH with precision. It also has a documented synergistic effect with other AHAs — small additions to a glycolic or lactic acid blend can amplify exfoliation without increasing the total acid load or irritation risk.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFormulation notes:\u003c\/strong\u003e Use at 0.5%–5% depending on application. Optimal pH: 3.0–4.5. Dissolves readily in water — add to the water phase. Pairs well with glycolic acid, lactic acid, niacinamide, and vitamin C. Suitable for exfoliating serums, toners, treatment masks, and pH-sensitive emulsions. Avoid high concentrations in leave-on products for compromised or sensitized skin without patch testing.\u003c\/p\u003e","brand":"Pure Actives Co.","offers":[{"title":"20g","offer_id":42742707159139,"sku":"4274270715","price":5.99,"currency_code":"CAD","in_stock":true},{"title":"50g","offer_id":42742707191907,"sku":"4274270719","price":13.99,"currency_code":"CAD","in_stock":true},{"title":"100g","offer_id":42742707224675,"sku":"4274270722","price":27.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0598\/4154\/4291\/files\/rn-image_picker_lib_temp_d0566e6a-0eb6-4f49-8140-85f60ae181bf.png?v=1756437882","url":"https:\/\/www.pureactivesco.ca\/es\/products\/tartaric-acid","provider":"PURE ACTIVES","version":"1.0","type":"link"}