Scalp cooling has been clinically proven to increase rates of hair regrowth. The majority of people choose to scalp cool to retain their hair, but increasingly there is an additional motivation in the form of faster, healthier and stronger hair regrowth as a result of scalp cooling. A study conducted in Japan in 2019 called 'Efficacy of Scalp Cooling in Preventing and Recovering from Chemotherapy-Induced Alopecia in Breast Cancer Patients: 'The HOPE Study'' concluded that scalp cooling resulted in faster recovery of hair volume within 12 weeks of chemotherapy, even in patient whom scalp cooling failed to prevent chemotherapy induced alopecia. This was particularly important as the patients in the trial received TC (docetaxel and cyclophosphamide), or AC (doxorubicin and cyclophosphamide) both of which are particularly challenging regimens for hair retention.
