Some people do not like shampoo bars. Especially because the ph of soap can strip the hair shaft. An apple cider vinegar rinse helps with that but the vinegar smell is unpleasant in my opinion. I've added fragrance and essential oils, but man that vinegar smell! So my husband and I have been using these bars for 5 days now and we are really liking it. My husband's hair is slightly curly and a lot thicker than my hair. Joe told me this evening that he has not had tangles since he started using the bar! That was exciting news! Now my hair is a lot thinner so I have used the bar with a light spray of leave in conditioner. This is a great start! I'm stoked that it seems to be working! It takes a month for hair to adjust to a new shampoo, so I will keep you updated.