Brought this shampoo brush along with the growth serum, too early to say how the serum is working yet but the brush is amazing in the shower especially when using conditioner, the massage is amazing it really is, exceeded my expectations and I use it every time I’m in the shower, it helps to lather up the shampoo but for me it’s a great feeling of a head massage when using it with conditioner. I wish they would make a hair brush that feels like this shampoo brush, I’d definitely buy one of those. 5 🌟 from me.