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BUTYL PHTHALYL BUTYL GLYCOLATE.

Optional CAS 85-70-1 / FILM FORMING, PLASTICISER

A specialized plasticizing agent that functions primarily as a film-forming component in cosmetic formulations, enhancing the flexibility and durability of polymer films. While not a bioactive skincare ingredient, it serves as a functional excipient that prevents film cracking and brittleness in products like nail lacquers and setting sprays.

plasticizer film forming

Science

Works by intercalating between polymer chains to reduce glass transition temperature, creating more flexible and crack-resistant films on skin, hair, or nail surfaces


Research

Medium confidence
Effective range N/A
Optimal

N/A

Key findings

  1. 01 Leachability studies in dental applications at 40-55% showed significant migration within 24 hours
  2. 02 Long-term toxicological assessment at 20,000 ppm showed no increase in tumor incidence in animal models

Transparency

Not commonly dusted

Not a marketing-driven ingredient; serves specific functional role as plasticizer with limited skincare applications


The Formula

Solubility
Oil
Optimal pH 4 – 6.5
0 7 14

Stability

Exceptional light stability but vulnerable to base-catalyzed hydrolysis with half-life dropping from 11 days at pH 7 to 1 day at pH 8

Synergies

  • VA/Crotonates Copolymer

Conflicts

  • Strong oxidizing agents
  • Highly alkaline environments
  • Lead-soldered containers

Safety

CIR Status
Safe as used
Sensitization risk Low

CIR Expert Panel reviewed for hairspray formulations; FDA cleared as indirect food additive for adhesives and coatings


Your Skin

No Normal
No Dry
No Oily
No Sensitive
Irritancy Low
Comedogenicity Unknown

Our Assessment

Optional

A functional ingredient with limited skincare relevance, primarily serving as a film-forming plasticizer in specialized cosmetic applications.


Related

Finding similar ingredients…


References