This is not your grandmother’s apple cider vinegar. My hair and my scalp were having a bad case of the winter blues, with dryness and itching and general dullness. You need to leave it on while you’re showering the rest of your body, to give it time to work its wonder (and don’t forget to keep your eyes closed.) But I’m here to tell you I felt like I had a new scalp and head of hair. All of the above problems are solved.