Polysorbate 20 is commonly used to emulsify oils and water at a 1:1 ratio. It is a nonionic surfactant that is water-soluble and used as a dispersing agent. It is gentle and nonirritating. Normally, you need a solubilizer, such as Polysorbate 20, to mix your essential or fragrance oils into body sprays without separating. Combine equal amounts of your fragrance or essential oil and the Polysorbate 20 until you achieve a clear solution, then, add this mixture to your water or alcohol.
Difference between Polysorbate 80 and Polysorbate 20: Polysorbates are ethoxylates of fatty acids esterified with anhydrosorbitol. Polysorbate 20 is a polyoxyethylene derivative of sorbitan monolaurate whereas polysorbate 80 is a polyoxyethylene derivative of sorbitan and oleic acid. So use polysorbate 20 to emulsify small amounts of lighter oils and polysorbate 80 to emulsify slighter larger amounts of heavier oils.
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