The advantages of Lash Protein by LashMagic : + A serum that lengthens, nourishes, and strengthens natural eyelashes. + WideLash (Biotinoyl tripeptide-1) patented formula from France to help promote the growth of new eyelashes. + Achieve thicker and denser eyelashes with regular use within 2-4 weeks. + Can be used for eyebrows and lower lashes.