Methylpropanediol
1,3-Butylene glycol isomer / MPD
Short-chain diol; humectant; solvent for active ingredients; penetration enhancement; well-tolerated; often used to enhance delivery of actives
Function & Common Use
Humectant / Solvent / Penetration Enhancer
Humectant
Serums high-active formulas toners
Synthetic
Concentration Limits
No limit
No limit
No specific 21 CFR cosmetic limit identified in source checked; EU limit reference: No
No specific MFDS limit identified in source checked; verify if ingredient is used in a Korean functional cosmetic category
Pregnancy: No specific restriction identified in source checked; standard cosmetic use
Frequently Asked Questions
Is Methylpropanediol safe to use in skincare?
Methylpropanediol has a Low concern rating from The Clean Sheet. Short-chain diol; humectant; solvent for active ingredients; penetration enhancement; well-tolerated; often used to enhance delivery of actives
Is Methylpropanediol allowed in India?
Methylpropanediol is currently classified as "Permitted" under Indian cosmetics regulations. No concentration limit is specified for India.
What is Methylpropanediol used for in cosmetics?
Methylpropanediol functions as: Humectant / Solvent / Penetration Enhancer. It is commonly found in: Serums high-active formulas toners.
Regulatory Status
Cosmetic ingredient; standard TGA cosmetic framework applies; no therapeutic goods listing required unless therapeutic claims are made
Not specifically listed as restricted cosmetic ingredient in NHPID source checked; standard Health Canada cosmetic notification applies
Identifiers
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Reviewed by The Clean Sheet, with our verdict.