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Spherical Beads for Active, Pigment, Fragrance Delivery
Posted: April 20, 2010
There are a four different types of Unispheres: Standard, Natural, Bi-color and Luxury. Standard Unispheres are based on mannitol or lactose. They are available coated or uncoated in various colors and loaded with various actives or pigments. Natural, however, are based on bamboo-derived cellulose and xylitol. According to the company, the Natural Unispheres are suitable for natural formulations. They are available in natural white, bamboo green, ochre yellow-brown and terracotta red-brown.
Bi-color Unispheres are based on mannitol, white coated with a high-pigmented core. The color is released upon application.
Luxury Unipheres, based on mannitol, contain precious gems (diamond, ruby emerald and sapphire), gold or silver. These beads add a shimmer effect to skin.
The Unispheres are recommended for gels, lotions, creams and toothpaste at 0.5-2.0%. The beads are hard and solid in bulk but soft and crushable with gentle rub-out in a finished product. In addition, the beads reportedly do not leave any shell residue on the skin or hair after using. The beads also show a high loading capacity.
Regulations, Stability, Color Aesthetics, and Economics.
Coloring the Cosmetic World: Using Pigments in Decorative Cosmetic Formulations covers the four dimensions to selecting colors for cosmetics. Take note of the chapter on color stability which describes the various colorants you will use in your product and includes a chart listing compatibility of colorants with a number of solvents. Photos rendered in full masstone color! Includes Chromium Oxide Green and Chromium Hydroxide Green!
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