Iodopropynyl Butylcarbamate

Iodopropynyl butylcarbamate is a synthetic preservative used in cosmetics and personal care formulas, often at very low levels. It's chosen to maintain product freshness by inhibiting microbial growth during storage and daily use.
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Ingredient Snapshot

Overview
A preservative used at low levels to keep formulas fresh.
Category
Preservative
Type
Preservative

Ingredient Ratings

Overall Rating

Good

Comedogenic Risk

None

Skin Benefits

Helps protect formulas from contamination and spoilage over time, supporting product reliability between openings. Effective at very low concentrations, which can minimize impact on texture and scent.

Uses In Skincare & Cosmetics

Common in water-based products like moisturizers, shampoos, and liquid makeup to maintain stability. Also used in wipes and cleansers where frequent exposure to air and moisture occurs.

Comedogenic Rating

This ingredient is not typically evaluated for comedogenicity, and no standardized rating is available.

Safety

Generally considered safe at permitted concentrations; some individuals may experience irritation or allergic contact dermatitis, especially with leave-on products or around the eye area. Usage is subject to concentration limits in several regions. Patch testing is prudent for sensitive skin.

Is Iodopropynyl Butylcarbamate a Good Ingredient?

Rated Good as an effective broad-spectrum preservative at very low levels, supporting formula integrity without much impact on texture or scent. It falls short of Great because of a known, though infrequent, risk of irritation or sensitization in leave-on products and near the eyes.

Products with Iodopropynyl Butylcarbamate

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