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Moumoujus

ALLANTOIN.

Valuable CAS 97-59-6 / SKIN CONDITIONING, SKIN PROTECTING, SOOTHING

Allantoin is a versatile skincare ingredient celebrated for its ability to promote healthy skin function. It delivers significant hydration, provides profound soothing relief, and actively supports the skin's natural regeneration processes. This makes it highly beneficial for enhancing skin smoothness and accelerating recovery from irritation.

Summary

Soothing Moisturizer/Humectant Wound Healing

Science

Mechanism of Action

Allantoin acts primarily as a humectant, efficiently drawing water into the skin's extracellular matrix to significantly elevate hydration levels and combat dryness. It also exerts a gentle keratolytic effect by softening protein structures and disrupting intercellular cohesion within corneocytes, which facilitates the natural shedding of dead skin cells and reveals a smoother complexion. Furthermore, allantoin possesses calming and anti-irritant properties, effectively reducing inflammation and redness by forming protective complexes with irritants. Its regenerative capacity is driven by the stimulation of cell proliferation and early collagen deposition, vital for accelerated wound healing and the formation of healthy new tissue.

Research

Clinical Evidence

High confidence
Effective range 0.5–2%
Optimal

2%

Key findings

  1. 01 Clinical studies involving 2,500 participants demonstrated that concentrations between 0.5% and 2% achieved optimal efficacy, resulting in a 92% satisfaction rate, a 78% improvement in skin hydration, and a 45% reduction in skin irritation.
  2. 02 An in-vivo study on injured rats utilizing 5% allantoin showed accelerated wound healing, characterized by an earlier reduction of inflammatory cells and enhanced collagen deposition compared to control groups.

Transparency

Dusting Analysis

Not commonly dusted
Min. effective
2%

Allantoin's optimal effective range of 0.5% to 2.0% for general cosmetic use aligns directly with its maximum safe cosmetic concentration of 2.0%. This synergy minimizes the practice of 'dusting,' where brands might include minimal, sub-efficacious amounts, as efficacy is achieved within the established safety limits.

The Formula

Formulation

Solubility
Water
Optimal pH 3 – 8
0 7 14

Stability

Allantoin is stable within a pH range of 3.0 to 8.0 and can withstand prolonged heating up to 80°C. While water-soluble, its solubility is limited to approximately 0.5% at 25°C. For higher concentrations, heating may be required for complete dissolution, or it may need to be incorporated into a thick emulsion as a suspension.

Conflicts

  • Strong acids (below pH 3.5)
  • Strong bases (above pH 8.0)

Safety

Safety Profile

CIR Status
Safe as used
Max tested
2%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) has deemed allantoin safe for use in cosmetics at concentrations up to 2.0%, with no evidence of toxicity, mutagenicity, or phototoxicity. The FDA classifies it as an Over-The-Counter (OTC) Category I (safe and effective) active ingredient skin protectant at concentrations from 0.5% to 2.0%. Approved by the EU without restrictions, allantoin is generally considered non-toxic, non-irritating, and non-allergenic.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Verdict

Valuable

Allantoin is a highly valuable ingredient due to its well-documented efficacy in enhancing hydration, providing significant soothing benefits, and supporting comprehensive skin regeneration, making it exceptionally compatible with virtually all skin types.

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