The secret of the FX5 serum is a state-of-the-art active substance considered to be one among the most effective hair-growth stimulating compounds in cosmetology. It acts actively throughout the whole life cycle of an eyelash, stimulating its growth and increasing number. Serum stimulates hair growth over the total life cycle and positively influences: eyelash length and thickness eyelash quantity eyelash condition and strength eyelash natural colour You need only one brush stroke to cover eyelashes. One pack is ample for the entire treatment. The serum is provided with the brush-applicator. Apply the serum with one stroke using the brush-applicator on the clean, dry skin of the upper eyelid on the lash line. Apply each evening. Don't use inside the eye and also the lower lash line. Serum is incredibly efficient: just one 3ml package provides roughly six months of daily use, which is the complete treatment.