Quote Originally Posted by thebigspendur View Post
The best way to think about backbone is take the dry brush and push down on it (the hair side of course) with your hand and see how much resistance there is.
I do a similar test: i bent the Dry brush to the side
I push it a little bit to my palm and make some swirling moves
If the knot resists for some seconds it's OK for me
Some knots immediately break and create a gap in the centre
That brush latter won't work for me in lathering except for painting moves which i don't like
Unfortunately when i buy a brush from an e-store or from ebay and i do the test some times "i step on it"
Happened with WD knots,the best thing is to see the brush in a store and touch it to check the backbone.