For adults: Isobutane is usually a propellant in spray products. It can irritate the skin, eyes and lungs and may cause skin allergic reactions in some people. Some governments limit its use because of possible contamination and safety concerns, so it’s best treated with caution.
If you are an adult using a product that contains isobutane: use the product as directed (do not spray directly on broken skin), avoid inhaling the spray, keep the product away from heat and flame, and store it out of reach of children. If you have sensitive skin, test on a small patch before regular use. Choose non-aerosol alternatives if you experience irritation or if you are applying something around babies or young children.
Warnings come from government and industry safety reviews: some authorities (Health Canada and EU cosmetics rules) place restrictions on its use; industry safety panels report it can be a skin irritant or allergen; and there is a contamination concern with butadiene. Avoid using aerosol sprays containing isobutane around infants and young children, avoid spraying near your face, and stop use and seek medical advice if you get redness, swelling, breathing trouble or other signs of a reaction.
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This ingredient is found in the following products:
This list shows products that contain Isobutane or its alternative names.
Isobutane is not recommended for adults due to potential safety risks.
May harm organs like liver, kidneys, or lungs with repeated use.
Banned or heavily restricted in one or more countries.
Can cause skin redness, itchiness, or rashes—especially on sensitive baby skin.
Can make breathing issues like asthma worse in babies and kids.
Could weaken or confuse immune system.
Linked to triggering or worsening eczema and similar skin conditions.
Isobutane is commonly found in skincare products, cosmetics, and topical applications. Always check ingredient labels before use.
The appropriate age depends on the specific ingredient properties and concentration. This analysis is for adults. Use the age selector above to check other ages.
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