Directions:To Determine The Amount of Fragrance Oil Used In A Product:The amount of fragrance that should be used in a formulation depends on three factors:1) The maximum amount of scent the product base will accept.2) The maximum IFRA skin safe level.3) The amount of fragrance that smells good in your product. You will look at these three maximum guidelines and use the LOWEST percentage.For example: Desired smell is 5%, making MP soap is 3%, and the IFRA max use is 5%. You should not use more than 3% in your product. This 3% is the lowest of all of those numbers.Maximum Product Base Guidelines:MP Soap: 3%CP, HP, CPOP Soap: 6%Lotions and Scrubs: 1 â€“ 2%Bath Salts, Fizzies & Tub Soaks: 5-10%Candle Wax: 6-12% (see specific wax for exact levels)To Determine The IFRA Guidelines:IFRA is a self-regulating trade organization that together with the industry's scientific center RIFM (the Research Institute for Fragrance Materials), establishes usage safety standards for materials that comprise fragrance and essential oils. Each year IFRA updates their standards based on sound science.
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Fragrance oils that contain vanilla or vanillin will change color. The color change can take days, weeks, or months and can vary from a light ivory to dark brown. Vanilla Color Stabilizers will prevent some products from changing color. Oils that are dark in color, contain floral notes or spices may in time naturally change color.