Reduce hair fall by 77% due to breakage1 with our 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. 1Reduction 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. 2Reduction in hair fall due to breakage, from repeat grooming test on tresses. 3Naturally 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. How To Use Apply through damp hair. Do not rinse. Use with the invati ultra advanced™ system. This thickening treatment is designed to strengthen individual strands for thicker, fuller-looking hair and is ideal for fine-to-medium hair types. It helps to reinforce fragile, thinning hair while preventing excess build-up, and is enriched with lavender and Australian sandalwood.