"I don't like to use shampoo too often, which is great in terms of keeping my hair moisturised and minimizing manipulation, but not so great when it comes to dealing with buildup. For a little extra help in that department, I've been using the Ouidad Heavy Lifting Bubbling Scalp Mask ($39). It applies like a gel and quickly reacts to your scalp's pH to transform into a foam that gently lifts away buildup, and what I love about it the most is that I can literally feel the dirt being lifted." — Danielle Jackson, assistant beauty editor