展开Why Use 30-day Therapy: Naturally Curly Best of the Best Leaders in Curl Awards 2020. Research shows that a whole range of factors, including stress, hormonal changes, overstyling, poor nutrition, age, menopause, post-pregnancy and medication can impact the health of the hair and hair growth. One in two women have reported experiencing the distress this can cause at some stage in their lives. Curlsmith Ultimate Lengths 30-Day Therapy is scientifically formulated with an exclusive complex that helps nourish thinning hair and promote existing hair growth from within. We have included all ingredients necessary for healthy hair: Keratin, Collagen, Biotin and OptiMSM, together with a blend of powerful natural actives. These nutrients help nourish your hair during the Anagen phase of the hair growth cycle and make it thrive.