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BENZOGUANAMINE.

Questionable CAS 91-76-9 / ANTIOXIDANT, FRAGRANCE

Benzoguanamine is a specialized organic compound primarily utilized as an antioxidant and structural modifier within cosmetic formulations. While predominantly found in high-performance nail treatments and resin-based systems, it serves a critical role in maintaining the integrity of complex mixtures by preventing oxidative degradation.

Antioxidant Fragrance Component Resin Modifier Crosslinking Agent

Science

On a molecular level, Benzoguanamine acts as an antioxidant by inhibiting oxygen-promoted reactions that would otherwise compromise the stability of other active ingredients. In structural applications, such as nail resins, it functions as a crosslinking agent to enhance film hardness, chemical resistance, and overall durability of the product layer.


Research

Low confidence
Effective range N/A
Optimal

N/A


Transparency

Not commonly dusted

Because Benzoguanamine is primarily a functional additive for product stability or nail resin modification rather than a primary skincare active, it is rarely 'dusted' in traditional skincare marketing. Its presence is typically utilitarian.


The Formula

Solubility
Oil
Optimal pH 4 – 12
0 7 14

Stability

A highly stable crystalline solid with a high melting point (227-228°C). It is sparingly soluble in water (0.32 g/L) but demonstrates good compatibility with organic solvents and alcohols like ethanol.

Synergies

  • Melamine-formaldehyde resins
  • Organic pigments

Conflicts

  • Strong oxidizing agents
  • Strong acids

Safety

CIR Status
Not reviewed
Sensitization risk Moderate

Listed on the IFRA transparency list as a fragrance component. ECHA classifies the pure substance as a potential skin and eye irritant. While FDA-approved for food-contact resins, it lacks a comprehensive CIR safety assessment for topical leave-on skincare.


Your Skin

Yes Normal
Yes Dry
Yes Oily
No Sensitive
Irritancy Moderate
Comedogenicity Low

Our Assessment

Questionable

Primarily a functional resin modifier for nail care with insufficient safety data and potential for irritation in topical skincare applications.


Related

Finding similar ingredients…


References