Famous combs in Japan are made of boxwood (Tsuge-gushi). The combs are usually soaked in camellia oil to keep their shine for many years. They also prevent static electricity from developing.
Beppu, new wave tsuge-gushi making
Satsuma, one of best boxwood produce area.
Hiroshima Masao, he is a No. 1 artisan of tsuge-gushi making in Japan. You can tell differences when you use his.