Joico Re:nu Softness & Manageability Serum Age Defy Program is a revolutionary scalp treatment formulated by Shiseido Laboratories which slows the greying process to keep grey hair at bay and maintain hair s youthful colour and texture. Joico Re:nu Age Defy Re:nual Serum is the result of 10 years of the most advanced hair care research and development. With continued use this exclusive formula is scientifically proven to slow down the greying process, restore hair s soft silky manageable texture, and create the optimal environment to grow healthy lustrous radiantly youthful hair. This kit includes: Re:nual Serum with dropper (50ml), Re:nual Serum Refill with funnel (150ml), Joico re:nu Softness & Manageability Shampoo (50ml), Joico re:nu Softness & Manageability Conditioner (50ml). This program contains approximately 4 months supply of Re:nual Serum.