We have dedicated time and research into hair growth, allowing us to select the best ingredients to support the hair cycle and create a world-class product that really works. The serum is packed with intensely nourishing ingredients that are scientifically proven to grow hair faster and longer, meaning fuller brows and longer lashes are now only a stroke away… By conditioning the hair follicles with deluxe natural ingredients, BB’s Boost Serum supports hair growth by prolonging the anagen phase of the growth cycle, aka the active growth phase. This causes lash and brow hairs to grow to lengths you never knew were possible, as well as strengthening, volumizing and enriching the strands with nutrients.