What it is: A tingly, hydrating scalp serum that soothes your roots and gives your scalp a sense of relief from tight styles.Who it's for: Ideal for all hair types and styles.What it does: Soothe, cool and calm your roots with this invigorating scalp serum. Slightly tingly and supermoisturizing, this dermatologist-tested serum will give your scalp a sense of relief from dryness, itchiness and tight styles. Founder Tracee Ellis Ross picked a mix of essential oils to be invigorating and refreshing with notes of calming rosemary, peppermint and lavender. How to use: Section wet or dry hair and apply the serum to scalp. Massage in for added relief. Use as desired.