Leave in formula to speed up hair growth between washes. Stimulate hair and nourish the roots for thick hair. Watermans Grow More Elixir is a higher concentrate of the Grow More technology that penetrates the scalp for optimal targeted hair growth. This is a great way to speed up your hair growth between washes. This revolutionary leave in Elixir can be used with Watermans shampoo and conditioner. Hair growth serum is perfect for individuals that only wash their hair a few times a week, but want the results of washing hair with Waterman's hair growth products daily. Elixir is a no rinse, leave-in treatment to be applied directly to scalp for ultimate growth results. Watermans Luxury Hair Growth Products are Made in the UK with the finest Ancient and modern-day ingredients such as Caffeine, Biotin, Argan Oil, Hydrolyzed lupin protein, Allantoin, and Rosemary.