The use of brushes is so commonplace nowadays sometimes I wonder if it actually tickles or not. Does the use of baby oil or something else have any impact?
It does tickle more...at least for the girls i've tickled with brushes..although I don;'t understand it because a brush isnt soft and looks more painful. But they tend to laugh when I use the brush haha don;t know why..
Speaking for myself:
Soft brushes (such as make-up brushes) only tickle on the ears or in the nostrils. They are useless on the feet or in the armpits.
Toothbrushes tickle a lot and don't hurt at all.
Brushes with plastic bristles can hurt if applied too vigorously.
Hair brushes on my feet make me go apeshit, however not anywhere else. Also even though it tickles, it tickles too much to make me aroused. If that even makes sense 😛
If you mean paintbrushes, I don't know why they would hurt. And they surely tickle a lot. Hairbrushes anywhere else apart from feet would hurt. But on feet ..... 😀 I like being tickled but if there is one thing I am scared of, it is a hairbrush with round teeth scrubbing my bare feet.