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INGREDIENT DICTIONARY
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Allantoin

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INCI: Allantoin / CAS #: 97-59-6

Allantoin is a cosmetic ingredient used to support skin comfort and improve formulation
mildness. It is commonly used in formulations designed for sensitive or barrier-compromised skin.

Key benefits

  • Supports skin comfort
  • Improves formulation mildness
  • Enhances overall skin feel
  • Compatible across formulation systems

Behaviour in formulations

Allantoin integrates into aqueous and emulsion systems but requires proper dispersion due to limited solubility.

Pre-disperse in water with mixing and gentle heat if required to aid dissolution.

Use level considerations

Use Rate (Min): 0.1
Use Rate (Max): 0.5

  • Leave-on: 0.1–0.5%
  • Rinse-off: 0.1–0.3%
  • Typically used at low levels due to efficacy

Starter Use Rate: 0.2-0.3% for most cosmetic formulations

Typically used at low levels (0.1–0.5%) due to solubility limitations and effective performance at low concentrations.

Formulation summary

  • Low solubility — must be properly dispersed
  • Typically used at low levels
  • Does not significantly affect viscosity
  • Suitable for emulsions and aqueous systems

Quality notes

High-purity cosmetic grade allantoin with typical assay ≥99.0% and low moisture content (~0.07%), supporting consistent formulation performance and stability.

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Related guides

Articles, formulation notes and practical reading related to Allantoin.

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