Best scalp scrub: Curlsmith Wash & Detox Shampoo, £23; Best shampoo for an itchy and flaky scalp: La Roche Posay Kerium Anti-Dandruff Gel, £11.50; Best shampoo to remove hard water buildup: Hello Klean Hard Water Shampoo, £18; Best shampoo for kinks, curls and coils: The Steam Bar Scalp Shampoo, £30; Best hydrating shampoo for dry hair ...