Vegetable Glycerin
Glycerine can be derived from petroleum, palm, coconut, corn, soy, or another vegetable.
4-Legger's glycerin is derived from non-GMO corn.
Unfortunately, some manufacturers use the lower cost petroleum glycerine as opposed to the sustainable vegan alternative.
Glycerine is a clear, colorless, and odorless liquid with a very sweet taste.
All of our shampoo bases are glycerine soaps often called Castile soaps as they will keep your dog's skin feeling more hydrated for several hours after you use it.