An improved method for preparing squalene from a squalene-containing composition, said method comprising the steps of (a) a purification distillation carried out at a temperature T 1 ； (b) a denaturing distillation carried out at a temperature T 2； wherein steps (a) and (b) may be performed in either order； T 1 and T 2 are sufficient to cause squalene to boil； T 2 >； T 1 ； and T 2 >； 200°C.
