Each Strands Kit comes with our one of a kind hair test, 1 8oz bottle of custom shampoo & 1 8oz bottle of custom conditioner. Strands is formulated without sulfates, parabens, and phthalates, and is always 100% vegan and cruelty-free! Our chemists take all the guesswork out of knowing what your hair needs. All you have to do is activate your kit online, test your scalp, pick your scent, and send us a small hair sample. We then analyze your hair type, texture & condition under the microscope using our groundbreaking scientific testing method. We will then send you custom-formulated shampoo and conditioner with a detailed hair report and ingredient list to optimize your stands.