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A nail strengthener is a treatment applied to nails to improve their durability and reduce breakage. It often contains ingredients like formaldehyde or keratin to fortify the nail plate.
No specific concern data available
Safety summary
Some nail strengtheners contain formaldehyde, which can cause irritation or allergic reactions. Use with caution, especially if you have sensitive skin or a history of allergies.
For informational purposes only. This is not medical advice. Always patch test new products and consult a dermatologist for skin concerns.