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Polysorbate 80 is a natural emulsifier, a wetting agent, a dispersing agent and a natural solubilizer for fragrance and essential oils into products. Polysorbate 80 is a natural emulsifier that is sourced from vegetable matter.
It basically creates a happy, incorporated and symbiotic relationship between water-based ingredients and oil-based ingredients. Allows oil to bind with water.
This is THE ingredient to use to incorporporate COLORED MICA into your bath bombs. Micas are all oil soluble. This means that Polysorbate 80 incorporated into your "wet" ingredients when making bath bombs will allow the micas to disperse in a water environment without leaving a film or stain in the tub (do not over-saturate or stains may be inevitable, sadly).
To use in bath bombs:
In order to get the same wonderful colors you use in your other bath and body products, add polysorbate 80 at about 1-2 % (of your total batch) in your liquid stage. This will eliminate any ring around the tub or floating mica that can occur if you don't use it. NOTE: rings can be left in tubs if they are not absolutely clean before using dyes, lakes or mica, no matter how much poly 80 you may use.