HHFK from Creative Bioarray are isolated from human hair follicles. HHFK are cryopreserved on primary culture and delivered frozen. Each vial contains >5 x 10^5 cells in 1 ml volume. HHFK are characterized by immunofluorescent method with antibodies to cytokeratines. HHFK are negative for HIV-1, HBV, HCV, mycoplasma, bacteria, yeast and fungi. HHFK are guaranteed to further expand for 15 population doublings in the condition provided by Creative Bioarray.