Mascara
MaybellineLash Sensational Mascara
Formaldehyde Releasers
DMDM Hydantoin, Quaternium-15
Preservatives that slowly release formaldehyde. A common cause of contact allergy; easy to swap out.
Safe amount 2 studies cited
Restricted in the EU; several are banned outright in leave-on products
Technical data
Dose-response breakdown and source citations behind the rating above.
Safety by concentration
Any detectable levelBetter to avoid
Cited sources
Contact allergy to and allergic contact dermatitis from formaldehyde and formaldehyde releasers: A clinical review and update
Goossens et al., Contact Dermatitis · 2022
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Frequently asked questions
Is Formaldehyde Releasers safe?
Preservatives that slowly release formaldehyde. A common cause of contact allergy; easy to swap out. Restricted in the EU; several are banned outright in leave-on products