Less than $10, this magical hair tool has a 4.6 rating with over a 130,000 Amazon reviews! 💁♀️ Do they actually work? Scalp brushes can work wonders for hair and scalp health, even if you don't have dandruff. A scalp brush will help to stimulate blood flow to the scalp, detangle, and can provide ergonomic deep scalp cleansing and exfoliation. They advise using the tool for about five minutes a day on wet or dry hair. It’s best to use it while you shampoo to deep clean your hair. They help…