Do Japanese hotels use free toothbrushes?

There are some, but I personally recommend bringing your own. First of all, the toothbrush doesn't take up much space. Before leaving, it doesn’t cost much to go to Watsons or something to buy a toothpaste packaged under 100ml. No one will check it if you put it in your bag. However, if it exceeds 100ml, it must be checked in. All hotel toothbrushes are uncomfortable to use. The brush head is larger and harder. In fact, I still recommend that you buy some toothbrushes and toothpaste after arriving in Japan. Japanese toothbrushes are pretty good to use. And generally the brush heads are relatively small. The Japanese toothbrushes sold in Watsons all cost 40RMB. Every time I go to Japan I have to buy some toothbrushes. Many domestic toothbrushes have soft bristles. It is said that this kind of damage to the gums will be greater;

Slippers, in order to prevent waste and pollution, there are no disposable slippers in hotels in Japan. It was replaced by one with a very hard texture. And the leather slippers are very small (maybe because I have big feet) and are very uncomfortable to wear (at least for me).

So, if it is slippers and toiletries, I personally recommend bringing your own. Of course you don’t need shower gel or anything like that. Many hotels in Japan offer Shiseido products. Well enough.