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Formaldehyde is a chemical compound that was historically used as a preservative in cosmetics. Due to safety concerns, its direct use is now highly restricted, and it is more commonly associated with formaldehyde-releasing preservatives.
No specific concern data available
Safety summary
Known allergen and sensitizer; classified as a human carcinogen by some agencies. Its use in cosmetics is heavily regulated or prohibited in many regions.
1% line marker
This ingredient is commonly used as a marker to identify where ingredients drop below 1% concentration on the label.
For informational purposes only. This is not medical advice. Always patch test new products and consult a dermatologist for skin concerns.