I want to know that the herbal shampoo that has been made ph 4.81 - 4.86 will use สารสร้างเจล , which type makes it slightly more viscous? because now it comes out as a clear liquid The usage rate of shampoo oil (EMAL 28 CT) is at 1 kg per 10 - 12 kg of various types of concentrated herbal water. Th...