Scalp serum for thinning hair featuring the aveda triple action follicle vitality complex, which helps support energy and protects against external aggressors to promote healthy looking hair.. Reduce hair fall by 77% due to breakage1 with aveda's latest advancement for thinning hair the invati ultra advanced 4 step system.. This leave in treatment for thinning hair is the final step in your 4 step routine. The formula leaves hair 6x stronger and more resilient2, helps reduce frizz for 24 hours, detangles hair, and protects from heat damage up to 230 °.. Dermatologist evaluated.. 98% naturally derived3.. Vegan.. Leaping bunny approved.. 1.reduction in hair fall 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.. 2.reduction in hair fall due to breakage, from repeat grooming test on tresses.. 3.naturally derived per the iso 16128 standard. From plant, non petroleum mineral sources, and or water. Aroma soothing pure fume aroma with lavender, clary sage, australian sandalwood, vanilla and other pure plant and flower essences.