I researched the 3 most popular shampoo bars out on the market. I wanted to make a shampoo bar that was good for all hair types, that wouldn't strip hair of natural oils and had the least amount of chemicals in it. I ended up formulating a recipe that is exactly what I hoped for. This syndent shampoo bar has naturally derived ingredients and vitamins necessary for your hair with a low PH level. Most shampoo bars advise an apple cider vinegar rinse every couple weeks due to build up that the other shampoo bars leave behind. That is not the case with this syndent shampoo bar. No need for a stinky rinse! I do still recommend a conditioner bar after which I will be working on adding next.