While other conditioners sacrifice hydration for volume, this formula balances weightless moisture with strand-strengthening, volume-boosting ingredients that let hair do its thing. In fact, BIOVOLUME 128™ has been shown to boost hair volume by up to 4X in just 5 washes..Suitable for all hair types.Vegan and cruelty-free.Formulated without parabens and sulfates.6.4 oz/ 190mL.Start with Hers Full Volume Shampoo (sold separately).After shampooing, apply conditioner to wet hair.Massage to evenly distribute, leave in for 1 minute, then rinse