Fullerenols C₆₀(OH)_x with different number of OH-groups (3-12 per molecule) were obtained by using a specially developed two-step grafting procedure. The regioselectivity of bound to fullerene molecule hydroxyls was proved by solid-state ¹H and ¹³C NMR. It has been found that the fullerenols with 2-3 OH groups per C₆₀ contain some amount of non-converted residual t-Bu groups and the solo grafting of one hydroxyl to one bond occurs due to the structure of the intermediate product. Therefore, the fullerenols with a medium number of hydroxyls seem to be the most proper derivatives for further covalent conversions.