Please give advice. I'm not sure how to adjust the recipe. I will make shampoo. I'm a person who uses shampoo in the market and itches all the time. Thanks in advance 1. Sulfate Free Shampoo Base (pH 7, Clear, Foaming) 25% 2. Coco Betain 5% 3. Poly-Conditioner Pro 2% 4. water lock 1% 5. Olive Oil (E...
