Skincare For the Scalp Is Gaining Popularity — Here’s Where to Start

Sunday Riley’s Clean Rinse Clarifying Scalp Serum ($68) is formulated with glycolic acid, to exfoliate the scalp and remove product residue from hair, as well as salicylic acid, to dissolve oil build-up and niacinamide, to promote healthy hair growth. To use, squeeze onto the scalp and leave for three to 30 minutes, then rinse and follow with shampoo.

One reviewer by the name of Shelby had only good things to say about this Sunday Riley beauty: “I love this serum! I was desperate for something to work on my scalp as it has been itchy and painful for months now. This completely cleared up my flakes straight after a wash and they don’t come back for two to three days. Because of this serum I can wash my hair less and that also helps with my sore scalp. It is a small bottle but it has lasted me five washes so far and I still have some left. Will definitely repurchase, couldn’t be happier with this!”