Yellow Soap Dye 50ml Soap dyes are formulated specifically to work in all bath and toiletry products. They are stable in low and high ph environments. They can be used in cold process soap making, lotions, smelly jellies, creams and gel products. Soap dyes may be used by the drop or by mixing with water to give you the flexibility to either use them by the drop undiluted or if you prefer to mix them into liquids. To mix with water: add the contents of the 5ml bottle to 115ml of water, or add contents of the 10ml bottle to 230ml of water. Do not consume. For external use only. Keep away from children and eyes.