Eyelash Extension Adhesives (Cyanoacrylate, Formaldehyde Off-Gassing, Allergic Contact Dermatitis, Corneal Damage) — safety profile
Moderate riskProfessional eyelash extension adhesives are cyanoacrylate-based (ethyl or butyl cyanoacrylate) and release formaldehyde gas as they cure — a reaction that occurs in the confined space directly adjacent to the eye.
What is this product?
Professional eyelash extension adhesives are cyanoacrylate-based (ethyl or butyl cyanoacrylate) and release formaldehyde gas as they cure — a reaction that occurs in the confined space directly adjacent to the eye. Formaldehyde is a potent sensitizer: 2-5% of the general population and up to 20% of eczema patients are allergic. Once sensitized, clients experience progressively worse reactions with each application. FDA has received hundreds of adverse event reports related to eyelash adhesives including corneal abrasion, lid swelling, and permanent eyelash loss. A 2019 Contact Dermatitis journal study found that 34% of eyelash extension wearers developed allergic contact dermatitis within 6 months of starting extensions. The adhesive must cure within millimeters of the eye — there is no safe buffer distance, making this an inherently high-exposure application.
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