I’ve seen quite a few videos where shamisen players wipe of the neck and the strings with a cleaning cloth. However they just wipe off the back of the neck and the top of the strings.
My experience with guitar strings is that you need to take the cloth and use your index and long finger to cover the string with the cloth under the string as well, and then wipe off the whole string together with the part of the neck that is directly under the string. When you play, skin flakes and fat is applied to the neck and when you hold down the string it gets in contact with that crap. Therefore I would clean not only the top of the neck, but also under the strings.
Any comments on why you wouldn’t do that on a shamisen?