Allantoin is a naturally occurring compound found in comfrey plants, sugar beet, and some other botanical sources. It is also produced synthetically for stability and large-scale use. Allantoin is prized for its cell-regenerative, keratolytic, and moisturizing properties, making it a staple in skincare and wound-healing formulations.
Chemical Name: 5-ureidohydantoin
Molecular Formula: C₄H₆N₄O₃
Molecular Weight: 158.12 g/mol
CAS Number: 97-59-6
Appearance: White crystalline powder
Odor: Odorless
Solubility: Soluble in water, glycerin; slightly soluble in ethanol
Stability: Stable under normal conditions; compatible with most cosmetic ingredients
Moisturizers & creams → Enhances skin hydration and smoothness.
Anti-aging products → Promotes cell regeneration and reduces fine lines.
Soothing lotions & after-sun care → Calms irritated or inflamed skin.
Acne & sensitive skin formulations → Reduces redness and supports healing.
Foot care & callus treatment → Softens hardened skin.
Used in wound-healing creams, ointments, and gels.
Helps treat minor burns, cuts, abrasions, and eczema.
Promotes tissue regeneration and reduces scarring.
Incorporated into toothpastes and mouthwashes to soothe oral mucosa.
Soothing & calming → Reduces skin irritation and inflammation.
Moisturizing & hydrating → Attracts water, softening the skin.
Regenerative → Promotes epithelial cell proliferation for faster healing.
Keratolytic → Helps remove dead skin cells gently.
Stable & safe → Compatible with most cosmetic and pharmaceutical formulations.
Parameter | Specification |
---|---|
Appearance | White crystalline powder |
Purity | ≥ 99% |
Melting Point | 220 – 225 °C |
Solubility | Soluble in water, glycerin; slightly soluble in ethanol |
pH (1% solution) | 6.0 – 7.5 |
Heavy Metals | ≤ 10 ppm |
Applications | Cosmetics, dermatology, oral care |
Topical Use: Considered safe for all skin types, including sensitive skin.
Concentration: Typically used at 0.1–2% in cosmetic formulations, up to 5% in therapeutic products.
Side Effects: Rare; very low risk of irritation or allergy.
Regulatory Status: Approved globally for cosmetic, dermatological, and oral care applications.
Q1: Can Allantoin be used on sensitive skin?
Yes. It is gentle, soothing, and widely recommended for sensitive or irritated skin.
Q2: How does Allantoin promote skin healing?
It stimulates epithelial cell proliferation and softens keratin, speeding up tissue regeneration.
Q3: Can Allantoin be combined with other actives?
Yes. Compatible with vitamins, antioxidants, niacinamide, hyaluronic acid, and other common cosmetic actives.
Q4: How long before visible results appear?
Skin softness and hydration improvements are noticeable within 1–2 weeks, while healing benefits may take longer depending on the condition.
Q5: Is Allantoin suitable for acne-prone skin?
Yes. It soothes inflammation and promotes healing without clogging pores.