Also found in: Medical, Encyclopedia, Wikipedia.


An oxidation product of uric acid, C4H6N4O3, found in the urine of most mammals (except humans and related primates) as the metabolic end product of purine oxidation, and also found in some plants. It is also produced synthetically and is often used in cosmetics and pharmaceuticals.


(Biochemistry) a substance derived from the secretions of snails and contained in some plants, used in skin care products and valued for its soothing properties
[C19: from allantois]


(əˈlæn toʊ ɪn)

a white powder, C4H6N4O3, produced by oxidation of uric acid: used as an emollient.
[1835–45; allanto (is) + -in1; so named because it is found in the fluid of the allantois]
References in periodicals archive ?
The minerals magnesium, zinc, iron and germanium, which plays an important role in all bio-chemical life and is found in the soil and water at Lourdes that also contains Pfaffic acid, allantoin, sitosterol and stipmasterol.
Enriched with allantoin, it helps to immediately soothe the skin, bringing comfort and softness.
The allantoin in the urine was determined by High Pressure Liquid Chromatography according to Chen et al [9] (HPLC, Instrument by controller water model 1525; water model 2707 auto sampler; water model 2489 UV detector and BREEZE software.
Sodium hyaluronate, known for its ability to hold 1,000 times its weight in water, saturates the lashes in hydration, boosting softness, elasticity, and shine, while allantoin from the comfrey plant helps soothe, calm, and moisturize lashes.
01% fluocinolone acetonide (group A), and 2% kojic acid + octinoxate + allantoin (group B) in treatment of melasma.
Whipsmart created a completely nontoxic formula comprised of: aloe vera (soothes irritation); allantoin (cleans away dead skin); vitamin E (protects and nourishes); colloidal oatmeal (soothes dry, itchy skin); menthyl lactate (cools and refreshes) and grapefruit essence (freshens naturally).
WASHINGTON -- A 6% allantoin cream has shown good results in healing wounds caused by epidermolysis bullosa (EB), with 82% of patients getting a complete closure by 2 months, in a phase lib study.
Curel Itch Defense Instant Soothing Moisturizing Spray is a nonmedicated, moisturizing spray formulated with such hydrators as a proprietary ceramide complex, allantoin and panthenol, the company says.
Milk samples from both morning and afternoon milking were collected on two alternate days (18th and 20th) for determination of allantoin concentration in milk.
Yn y planhigyn mae cemegyn o'r enw allantoin, sy'n ysgogi twf celloedd ac ar yr un pryd yn gostwng llid, ond mae 'na hefyd alcaloidau ynddo, sy'n wenwynig, felly dydi o ddim yn blanhigyn i chwarae hefo fo.
Turns out, it contains a perfect balance of skin-friendly ingredients, like glycolic acid (for removing dead skin cells), collagen and elastin (for skin structure), allantoin (for regeneration), and a mix of vitamins and minerals (for regeneration and anti-inflammation).