For up to eight hours of volume and lift, try award-winning Rare Oil Volumizing Shampoo. Infused with pure marula oil and other nutrients, this color-safe shampoo gently cleanses and nourishes hair without weighing it down, transforming fine, limp strands to fabulously full locks. Boosts volume for up to 8 hours Product was tested by an established independent third-party laboratory. Results may vary. The featherweight formula is ideal for fine hair.