I have been experiencing extreme dryness and tangles over the past several months. After many months of experimenting, I found out that extra virgin olive oil was causing all my problems. I was pre-pooing with it and/or adding it to my conditioners to add "moisture". Once I did an ACV rinse and stopped using the oil this past weekend, my hair was back to normal. I had been using extra virgin olive oil and GVP CB over the summer with great results. When the fall season hit, my hair was not the same. I will maybe try it again in the summer along with my products with glycerin.