Klein blue is the color of royalty. It is rich in hue and a darker blue than our other micas. This is a great blue to use if your soap oils have a darker yellow or green base, because the blue is so rich it will make offsetting the color of the oils easier while still achieving a bright gorgeous blue. With clear oils it is one of the most beautiful blues we have ever seen. Rich, deep, dark, and intense...This is Klein blue.
Recommended use rate in cold and hot process soap is 1 tsp. per pound of oils. For melt and pour, the recommended use rate is .5 tsp. per pound of base.
We cannot recommend our green and blue micas for bath bombs, since the color additives contained in them (chromium oxide green and ultramarine blue) are not approved by the FDA for use on lips or other mucous membranes. Although bath products have historically been considered externally applied cosmetics, bath bombs are different because the product is put in the bath and there is prolonged exposure to mucous membranes. We have personally clarified this information with the Director of the Color Certification Branch of the FDA. Have questions? Contact Us. You can read more about color additive safety regulations here: FDA Color Tables