CITRA 3 for dry, Clinically Proven Nail Strengthener by Nail Tek for dry,brittle nails.

Formaldehyde FREE helps to develope stronger, flexible nails in a safer, more natural way.

Citra Formaldehyde Free by Nail Tek is the first-ever nail strengthener with a natrual citrus-based alternative to formaldehyde. Formaldehyde, the most widely used strengthening agent, has been removed without sacrificing any of the features that it produces in a nail strengthener. It offers an unmatched healthy, natural alternative for anyone with sensitivity to, or concerns about, formaldehyde-based strengtheners. Citra Formaldehyde Free is also free of DBP and toluene.