| abstract |
[Problem] To provide a 5α-reductase inhibitor which contains a novel component as an active ingredient. [Solution] The features of the present invention are as follows. 1. A 5α-reductase inhibitor containing a sea berry extract as an active ingredient. 2. A 5α-reductase inhibitor containing, as active ingredients, a sea berry extract and a saw palmetto extract at such a blend ratio that a synergic effect can be exerted. 3. The 5α-reductase inhibitor according to the above-mentioned item 2, characterized in that the weight-based mixing ratio between the saw palmetto extract and the sea berry extract (i.e., (saw palmetto extract):(sea berry extract)) is (3 to 1):(1 to 2). 4. A prostatic hyperplasia-preventing agent containing a 5α-reductase inhibitor as recited in any one of the above-mentioned items 1 to 3 as an active ingredient. 5. An androgenic alopecia-preventing agent containing a 5α-reductase inhibitor as recited in any one of the above-mentioned items 1 to 3 as an active ingredient. 6. An acne-preventing/ameliorating agent containing a 5α-reductase inhibitor as recited in any one of the above-mentioned items 1 to 3 as an active ingredient. |