Our Yelp yellow FUN soap colorant is a bright neon yellow Looks fun and cheerful. This neon yellow soap colorant contains no chemical additives or carmine, and is stable and non-bleeding. You can feel confident that it performs well in high pH environments and that it won't morph during the saponification process. It is dispersed in vegetable glycerin to help prevent clumping in your finished soaps, and the two may separate in the bottle. If this happens, just shake well before use. Make a note that this is not a cosmetic grade color and is not suitable for lip products. No returns on soap colorants.