Back to Ingredient Dictionary

BUTANE

Description

Butane is a colorless, highly flammable hydrocarbon gas commonly used as a propellant in aerosol skincare products. This volatile organic compound belongs to the alkane family and has the chemical formula C₄H₁₀. In cosmetic formulations, butane serves primarily as a propellant, facilitating the dispensing of product from pressurized containers.

When incorporated into skincare products, butane rapidly evaporates upon contact with the skin, leaving no residue. This property makes it ideal for delivering active ingredients in spray-on formulations such as sunscreens, body mists, and dry shampoos. Butane's low boiling point (-0.5°C) ensures quick vaporization, creating a fine mist that allows for even product distribution.

While butane is generally considered safe for topical use in limited concentrations, it can potentially cause skin irritation or dryness in sensitive individuals. Prolonged exposure to high concentrations may lead to frostbite due to its rapid evaporation and cooling effect. Formulators must adhere to strict safety guidelines and regulatory limits when incorporating butane into skincare products. It's important to note that butane is not an active skincare ingredient and provides no direct benefits to the skin beyond its role as a propellant.