Some, including myself, think, or hope, putting on reflective stickers on the back of the gloves helps when making turn signals at night. I think it's useful in only very limited situations, when the car light is directed at your hand, which often is not the case.
Any drivers here could provide some input? Have you been able to tell a cyclist's turn intention thanks to the reflections from their glove at night?
I have just started using a product called "safe turn". Haven't had a driver interaction though because when I go home its past rush hour and very quiet in the neighborhood...