Jason Restorative Biotin Shampoo pure natural sls free shampoo. Strengthens and Repairs Damaged Hair. Jason Restorative Shampoo gently cleanses as it restores healthy strength to weak, damaged hair. The thickening properties Biotin and Vitamin B5’s revitalise hair’s elasticity. Ginseng and lavender extracts help repair split ends and minimise future breakage. Fortified with energy, your hair looks healthier and grows stronger. Vegetarian.