PROBLEM TO BE SOLVED: To provide a novel evaluation method which uses a biochemical indicator that enables evaluation, without imposing a burden on a subject, of hair growth conditions and compressive stress observed when a scalp is pinched.SOLUTION: A sample of skin stratum corneum is taken by means of tape stripping or the like, and an expression level of DJ-1 contained therein is measured to evaluate hair growth conditions and compressive stress observed when a scalp is pinched.SELECTED DRAWING: Figure 1