DS Laboratories Revita.COR conditioner uses only ultra-premium ingredients with each being evaluated for their efficacy in clinical trials. These include caffeine, which stimulates hair growth much like it does the human nervous system, and plant-based stem cells to aid renewal. New technology ensures the ingredients keep working for up to 12 hours after hair has been rinsed thanks to bio-adhesive microsphere that will stick to the scalp and retain the conditioners effects even during sweating and swimming.