Butylparaben — Allergy Risk & Safety Profile

Name: Is Butylparaben Safe? Allergy Risk & Alternatives
Creator: SkinDetekt

INCI: BUTYLPARABEN

Also known as: Butyl 4-Hydroxybenzoate

🟡 Medium Risk

Key Facts

CAS Number: 94-26-8
Category: preservative
Risk Level: medium
Common Allergen: Yes
EU Status: Restricted
Max Concentration: 0.14% (EU)
Found In: moisturizer, makeup

Is Butylparaben safe in cosmetics?

Butylparaben is rated medium risk in cosmetic products. It is a known allergen that can cause contact dermatitis in sensitized individuals. EU-restricted. More potent endocrine disruptor than shorter-chain parabens. This ingredient is restricted under EU cosmetic regulations. Safer alternatives include Phenoxyethanol, Sodium Benzoate, Potassium Sorbate. Commonly found in moisturizer, makeup.

What is Butylparaben?

Paraben with highest estrogenic activity among common parabens. EU restricted to 0.14%.

Allergy & Safety Information

Butylparaben is generally safe for most people but may cause irritation or allergic reactions in sensitive individuals. If you experience redness, itching, or swelling after using a product with this ingredient, discontinue use and consult a dermatologist.

This ingredient carries moderate allergenicity risk. It can cause reactions in sensitised individuals but has a lower sensitisation rate than high-risk ingredients. Patch testing before full use is advisable for anyone with a history of cosmetic reactions.

Allergen Note: EU-restricted. More potent endocrine disruptor than shorter-chain parabens.

About Preservative Ingredients

Preservatives prevent microbial growth in water-containing cosmetic formulas. Without them, products would spoil within days. However, preservatives are among the most common causes of allergic contact dermatitis — they must be present in high enough concentrations to be effective, yet that same efficacy can irritate sensitised skin.

Relevance for Butylparaben: If you react to one preservative, you may be cross-reactive to others in the same chemical family (e.g., isothiazolinones, formaldehyde releasers, or parabens). Checking the full preservative profile of every product you use is the most reliable way to identify your personal trigger.

How to Identify Butylparaben in Products

Cosmetic ingredients are listed by their INCI (International Nomenclature of Cosmetic Ingredients) name in descending order of concentration. To check whether a product contains Butylparaben, scan the ingredient list for its INCI name exactly as it appears above. Ingredients present at 1% or less may appear in any order after the 1% threshold.

Product types to prioritise checking: Moisturizer, Makeup. These product categories are the most common sources of Butylparaben exposure based on formulation data.

Not sure if your products contain Butylparaben? Paste the ingredient list into the free ingredient checker to scan for Butylparaben and other allergens automatically.