Smoothes and adds shine [SEP] The brush makes my hair softer and shinier. But not a huge difference to be honest.<br /><br />The massage function I didn't really care for. The vibration is pretty weak so I couldn't feel it even when I pressed the brush against my scalp. But I bought this mainly for the ion function so I don't mind.<br /><br />The bristles are okay, just like any other brush. Doesn't do a great job of detangling and pulls out some hair. So I use my other detangling brush first then use this one for extra shine and smoothing.<br /><br />It might also help with frizz, but I'm not very sure. Quality is good, packaging is good too.