Product build-up, dryness, sweat and stress can all leave the scalp itching, especially at night. Our clinically tested itchy scalp shampoo, conditioner and oil for itchy scalp are gentle itchy scalp remedies; the oil doubles as a weekly itchy scalp treatment. Antibacterial tea tree and neem target the yeast that can trigger itching, and eucalyptus and bergamot cool it.