Haven’t read anything on guar gum in bath bombs. Try researching jelly bath bombs and see what recipes include. Lush had/has jelly bath bombs. Wasn’t interested. Bath bombs for me equal a good tub experience with no tub ring, astounding scent, and smooth skin after bath. I don’t care about the twirling, multi color etc. I want to soak in something that doesn’t mean extra work cleaning the tub or wiping off a greasy oily film after bath. Am not selling yet but hopefully my perfect bath bomb would be marketable. What do you think?