Jason Restorative Biotin Conditioner Strengthens and Repairs Damaged Hair. Jason Restorative Hair Conditioner gently moisturises as it strengthens and repairs weak, damaged hair. Biotin and Vitamin B5 revitalise vitality and elasticity. Jojoba Seed Oil deeply nourishes your hair while Ginseng and lavender extracts help repair split ends and minimise future breakage. Fortified with energy, your hair appears healthier and grows stronger. Vegetarian.