BUTYLPARABEN
Commonly Found In
Overview
Butylparaben is a preservative in the paraben family with the longest alkyl chain of the commonly used parabens. It has the highest estrogenic potency among them in in vitro studies, leading to EU restrictions: maximum 0.14% alone or 0.14% each if combined with isobutylparaben. Japan limits it to 0.1% and it is banned in EU/UK leave-on products above 0.14%.
Also known as: butyl p-hydroxybenzoate, butyl 4-hydroxybenzoate, n-butyl paraben, Nipabutyl, Tegosept Bu
Key Benefits
Primarily a preservative; no direct skin benefit. Clinical evidence indicates higher estrogenic potency than shorter-chain parabens in in vitro assays, which prompted stricter regulatory limits.
Supporting Research
- β’ EU Regulation 358/2014: Restricted butylparaben to 0.14% in leave-on cosmetics; banned in EU diaper-area products for children under 3
- β’ SCCS/1348/10 (2011): Higher endocrine concern profile for butylparaben vs. methyl- and ethylparaben due to longer alkyl chain
Skin Compatibility Ratings
Comedogenic Rating
Non-comedogenic at typical use concentrations
Source: CIR Expert Panel
Irritancy Rating
Low irritancy at permitted concentrations; sensitization rare
Source: CIR Expert Panel
Typical Use Concentration
Range
0.02β0.14%
Optimal
0.05β0.1%
EU Annex V max 0.14% alone or 0.14% each when combined with isobutylparaben. Japan max 0.1%. US unrestricted but usage declining.
Works Well With / Avoid
Works Well With
EU Annex V limits each of butyl- and isobutylparaben to 0.14% individually, and to 0.14% total if combined. Leave-on products banned in EU/UK above 0.14%. Japan max 0.1%.
Commonly Found In
Global Regulation Summary
Overview of current status across major international markets.
Detailed Regional Status
| Region | Status | Max Conc. | Conditions | Source |
|---|---|---|---|---|
| πͺπΊ EU | Allowed | - | - | Official β |
| πΊπΈ USA | Allowed | - | - | Official β |
| π―π΅ Japan | Allowed | - | - | Official β |
| π°π· Korea | Unknown | - | - | Official β |
| π¬π§ UK | Banned | - | Follows EU regulations (V/12a) | Official β |
π Why Regulations Differ
Higher endocrine concern profile compared to shorter-chain parabens drove stricter EU limits in 2014 (Regulation 358/2014). Japan set its own limit at 0.1%. US has no specific restriction but CIR reviewed it as safe at low concentrations.
Recent Regulatory Changes
- β’ EU Regulation 358/2014 (April 2014): Leave-on ban above 0.14%; diaper-area products for children under 3 banned
Regulation Analysis
Regional Agreement
Banned in UK but allowed in EU, USA, Japan.
Category Comparison
There are 122 ingredients in the FRAGRANCE category. 100% are banned in at least one major market.
Strictness Ranking
πΏ Natural Sources
Not found in significant amounts in nature. All commercial butylparaben is synthetically manufactured.
π How It's Made
Synthesized through esterification of p-hydroxybenzoic acid with butanol (n-butanol) in the presence of sulfuric acid or other acid catalysts, producing butyl p-hydroxybenzoate.
π Uses in Cosmetics
Previously used at 0.1-0.4% as a preservative against mold and yeast. The EU banned it in leave-on products (products you don't wash off) in 2014 due to hormone-related concerns. Still allowed in wash-off products at up to 0.14%. Banned in diaper-area products for children under 3.
π¬ Other Applications
Previously used in pharmaceuticals and as a food preservative, but usage has drastically declined globally due to regulatory restrictions.
π‘ Fun Facts
- β’ Has the strongest estrogen-like activity among commonly used parabens, which is why it faced stricter regulation
- β’ A 2004 study found parabens in breast tissue samples, sparking widespread public concern β though no direct link to cancer was established
- β’ After the EU banned it in leave-on products in 2014, many brands worldwide removed all parabens from their products
Data Sources
- β’ EU Regulation 358/2014 β restriction of butylparaben in cosmetics
- β’ SCCS/1348/10 (2011) β SCCS opinion on parabens
- β’ CIR Expert Panel β Safety Assessment of Parabens
- β’ Japan MHLW cosmetics standards (max 0.1%)
Last data verification: 2026-04-12
Related Ingredients
BENZOIC ACID
ETHYLPARABEN
METHYLPARABEN
PHENOL
POTASSIUM SORBATE
SODIUM BENZOATE
Learn More
Frequently Asked Questions
What is BUTYLPARABEN used for in cosmetics?
BUTYLPARABEN is primarily used for fragrance in cosmetic products. It also serves as preservative. The ingredient is commonly found in perfumes, colognes, and scented cosmetics.
Which countries regulate BUTYLPARABEN?
BUTYLPARABEN is banned in UK. The ingredient is freely allowed in EU, JP, US.
Are there alternatives to BUTYLPARABEN?
Due to regulatory restrictions on BUTYLPARABEN, cosmetic manufacturers often use alternative ingredients with similar functions. For fragrance, alternatives may include other approved ingredients in the same category. Consult product labels for specific formulations, and look for products compliant with your region's regulations.
Where can I find official regulation information about BUTYLPARABEN?
Official information about BUTYLPARABEN regulations can be found on government websites: EU CosIng database, US FDA Cosmetics page, Japan MHLW cosmetics standards, UK Government cosmetics guidance, and Korea MFDS. Always verify regulatory status with these official sources before making formulation decisions.
Disclaimer
The information on this website is for educational and informational purposes only and is not intended as medical advice. While we strive for accuracy based on official government databases, cosmetic regulations change frequently. Always consult with a qualified professional or refer to the latest official regulatory documents for compliance. We are not responsible for any actions taken based on the information provided here.