Propylene glycol is used extensively for commercial and industrial purposes.
This is a world class shampoo that contains the highest quality natural ingredients available. It is an ultra cleansing family shampoo which, when used correctly can provide clean, healthy hair in its purest state, without damage. When applying shampoo, put a couple of drops on one hand, then gently rub your hands together. When the shampoo is evenly distributed on both your palms, apply to hair. This will ensure the shampoo is applied evenly, using the minimum quantity.