Disclosed herein is a semi-permanent hair shaping method comprising (c) applying onto the hair a first composition comprising, in a cosmetically acceptable medium, at least one solubilized fixing polymer chosen from anionic and amphoteric polymers, said application being optionally followed by a resting time for said first composition, (d) applying onto the hair a second composition comprising, in a cosmetically acceptable medium, at least 0.15% by weight, relative to the total weight of said second composition, of at least one salt chosen from mineral and organic salts, said application being optionally followed by a resting time for said second composition, where step b) is conducted prior to or after step a), then (c) rinsing the hair, (d) shaping the hair either after applying the first composition of step a), or after applying the second composition of step b) and prior to the rinsing step c).