dpHUE Root Touch-up Kit If you're ready to get a bit more serious about touching up your roots, this dpHUE Root Touch-up Kit ($30) can help colour up to one inch of new growth with low-ammonia, salon-quality colour. (Plus, there are two applications per kit so you'll be a pro by the time the second one comes around.) Image Source: sephora.com dpHUE Root Touch-up Kit $30 from sephora.com Buy Now