OPTI shampoo targets hair thinning and hair loss concerns with two powerful patented ingredients, Procapil® and Capixyl™, that are clinically proven to promote healthy hair growth and restore fullness and vitality. These plant-based ingredients are composed of natural compounds that promote hair growth, thicken brittle and thinning hair, and increase hair retention. They achieve this by blocking dihydrotestosterone (DHT) and safeguarding and protecting hair follicles, which extends the anagen (growth) phase of the hair cycle while simultaneously minimizing the telogen (resting) phase, resulting in thicker, fuller, and healthier strands.