Science
Mechanism of Action
This ingredient primarily functions as a solvent, aiding in the dissolution and uniform distribution of other compounds within a formulation. As a diol, it may additionally contribute as a humectant, drawing moisture to the skin, or as a penetration enhancer, facilitating the delivery of active ingredients, although specific direct cosmetic benefits are not extensively documented.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
No data available to suggest dusting concerns for this ingredient.
The Formula
Formulation
Stability
Optimal pH range for stability is not specified. For storage, it is recommended to keep the ingredient in a cool, dry, and well-ventilated environment with the container tightly sealed.
Safety
Safety Profile
TRIMETHYL-1,3-PENTANEDIOL is classified as 'slightly toxic'. Acute oral toxicity (LD50) in rats is 2,000 mg/kg, and dermal toxicity (LD50) in rabbits is 6,300 mg/kg. While moderate eye irritation was observed in rabbits, skin irritation was minimal to absent in guinea pigs. Importantly, repeated application studies in humans showed no evidence of irritation, sensitization, or photosensitization. According to EC Regulation No 1272/2008, it does not meet the criteria for skin corrosion/irritation, serious eye damage/irritation, or skin sensitization. It is also recognized by the FDA as a Food Contact Substance and carries a 'Yellow triangle' classification from EPA Safer Choice, indicating some hazard profile issues for its functional ingredient-class as a solvent.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Primarily serving as a solvent and potential formulation enhancer, Trimethyl-1,3-pentanediol exhibits a low risk of skin irritation or sensitization in human studies, making it an optional ingredient for specific formulation needs despite limited direct cosmetic efficacy data and some regulatory notes concerning its solvent class.
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