For soaps that are a vibrant blue color and attract attention, you should consider adding our ultramarine blue FUN Soap Colorant to your list of soap making supplies. This blue soap dye is stable and non-bleeding and performs well in high pH environments. It also contains no chemical additives or carmine and won't morph during the saponification process. The pigment 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. No returns on soap colorants.
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