This post contains affiliate links. If you purchase through them, I may earn a small commission at no extra cost to you. Let's talk about the thing nobody thinks about until it's too late: your water. You spend money on the right shampoo. You come in for glaze appointments. You baby your color between visits. And then every single day, you stand under a stream of water that's quietly undoing all of it. I'm talking about your shower head. And more specifically, what's coming o