Bought with my own money - the shampoo brush is good.

Sometimes I get really bad headaches. There are times when it hurts so much that I can't even touch it.

I have severe hair loss, so I have been using a shampoo brush for several years. Honestly, I don't see any effect on the hair loss, but my headache has really improved.

If I sometimes forget and skip the shampoo brush, my headache comes back quickly. Try using a shampoo brush when you shampoo. It makes your head feel refreshed.