1 Nu Colour® Lash + Brow Serum for 3 months of treatment Gain visibly longer, thicker, fuller, and shiner lashes and brows in as little as 4 weeks with this Lash + Brow Serum. This clean, powerful formula targets your lashes and brows underlying nourishment and conditioning needs and should last up to 12 weeks #lashes #nuskin #lash #brow #lashextensions