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This ingredient is primarily used in the production of polymers, not directly for its effects on skin. In cosmetics, it would only be present as a trace residual from the manufacturing of other ingredients.
No specific concern data available
Safety summary
Butadiene itself is a gas and a known carcinogen, but it is not used in its free form in cosmetics. Any trace residuals in cosmetic ingredients are strictly regulated to ensure safety.
CAS Number
106-99-0
For informational purposes only. This is not medical advice. Always patch test new products and consult a dermatologist for skin concerns.