4 Oz Sample Vanilla Color Stabilizer for MP Soap Making to Lessen Brown Hue in Melt and Pour Soaps Works great in fragrance and essential oils that contain Vanilla To be used in MP Soap making batches that use fragrance oils containing Vanilla Prevents the Vanilla in fragrance oils from turning melt and pour soap formulations brown. It will not prevent color changes due to ingredients other than vanilla. Must use in a well ventilated area. I struggled with some of my soaps turning brown and I found out I needed the Vanilla stabilizer. Wow! What a difference it makes! My colors stay true now! Do not store this product after mixing. The stabilizer will turn into a solid state in temperatures below 68F. To return to a liquid state, place in warm water. Test your final product to insure performance.