Scalpmaster Shampoo Brush | $1 | Amazon
When something only costs $1, there is no logical excuse not to buy it. You don’t need to tell yourself any excuses about the Scalpmaster Shampoo Brush. Scalp brushes are a great addition to your shower routine because they can help relieve itchy, dry scalps by getting rid of built-up shampoo. Plus, it just feels really nice to give your scalp a little scratch. For $1, this is a no-brainer deal.