Details: Reduce hair loss by 77%* with Aveda Invati Ultra Advanced 4-step system. Step three is Revitalizing Scalp Serum, powered by our breakthrough follicle vitality complex of eclipta, alpinia, and ginger, which helps boost energy and protects against external aggressors to help create a healthy follicle environment. This scalp serum for thinning hair uses a triple action approach to neutralize and help eliminate damaging oxidative stressors; strengthen and protect; and invigorate. Formulated without: Animal-derived ingredients, gluten, silicones, mineral oil, SLS/SLES, synthetic fragrance, parabens, phthalates, petrolatum, paraffin, and formaldehyde donors. Follow with Fortifying Leave-In Treatment. *Reduction in hair loss due to breakage, from repeat grooming test on tresses after use of Invati Ultra Advanced™ 4-step system of shampoo, conditioner, serum and leave-in. *Per the ISO 16128 Standard,from plant, non-petroleum mineral , and/or water.