Quick Comparison

AllantoinAllantoin
Typical ConcentrationConcentrations: 0.5-2% in most formulations. Often combined with other soothing ingredients. Apply as part of regular skincare routine. Safe for all ages and skin types, including infants.Concentrations: 0.5-2% in most formulations. Often combined with other soothing ingredients. Apply as part of regular skincare routine. Safe for all ages and skin types, including infants.
ApplicationTopical (cream, lotion, serum, ointment). Compatible with all other skincare ingredients.Topical (cream, lotion, serum, ointment). Compatible with all other skincare ingredients.
Research Papers8 papers8 papers
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Mechanism of Action

Allantoin

Allantoin (5-ureidohydantoin) stimulates cell proliferation and tissue regeneration by promoting fibroblast activity, keratinocyte proliferation, and extracellular matrix synthesis including collagen and glycosaminoglycans. It acts as a mild keratolytic by promoting the natural desquamation process—loosening corneocyte adhesion and facilitating shedding—without the irritation, pH disruption, or barrier compromise associated with alpha- or beta-hydroxy acids. Allantoin has anti-inflammatory properties through modulation of prostaglandin synthesis (inhibiting COX-2 and reducing PGE2) and may downregulate pro-inflammatory cytokines. Its moisturizing effect comes from increasing the water-binding capacity of the extracellular matrix and stratum corneum; it is highly soluble and forms hydrogen bonds with water. Allantoin also promotes wound epithelialization. Its safety profile—non-irritating, non-sensitizing, non-comedogenic—makes it suitable for compromised skin, post-procedure care, and infant formulations.

Allantoin

Allantoin (5-ureidohydantoin) stimulates cell proliferation and tissue regeneration by promoting fibroblast activity, keratinocyte proliferation, and extracellular matrix synthesis including collagen and glycosaminoglycans. It acts as a mild keratolytic by promoting the natural desquamation process—loosening corneocyte adhesion and facilitating shedding—without the irritation, pH disruption, or barrier compromise associated with alpha- or beta-hydroxy acids. Allantoin has anti-inflammatory properties through modulation of prostaglandin synthesis (inhibiting COX-2 and reducing PGE2) and may downregulate pro-inflammatory cytokines. Its moisturizing effect comes from increasing the water-binding capacity of the extracellular matrix and stratum corneum; it is highly soluble and forms hydrogen bonds with water. Allantoin also promotes wound epithelialization. Its safety profile—non-irritating, non-sensitizing, non-comedogenic—makes it suitable for compromised skin, post-procedure care, and infant formulations.

Risks & Safety

Allantoin

Common

None. Allantoin is non-irritating, non-sensitizing, and non-comedogenic.

Serious

None.

Rare

Allergic reaction is extremely rare.

Allantoin

Common

None. Allantoin is non-irritating, non-sensitizing, and non-comedogenic.

Serious

None.

Rare

Allergic reaction is extremely rare.

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