NailExtend ensures that your nail plate, the hard keratin structure that protects the end of a finger, is given the care it needs as it is the part of the nail most prone to breakage and splitting. SenePlex+®: Helps to condition and moisturize Glycerin: Works to reinstate moisture in the nails Myristoyl Pentapeptide-17: A peptide that helps to promote the appearance of healthy-looking nails.