The present invention is a controlled delivery system that can be incorporated
in hair, skin, and fabric care products such as shampoos, conditioners, hair styling
products, lotions, creams, liquid laundry detergents, fabric softener, and other
hair, skin, and fabric care products to effectively deliver a broad range of active
agents and sensory markers onto the hair, skin, and fabric. The system also prolongs
the release rate of the active agents or sensory markers over an extended period
of time, or provides heat triggered release of the active agents and yields a high
impact fragrance "burst" upon blow drying the hair, ironing the fabric, or other
types of heat treatment. The controlled delivery system of the present invention
is a nano-sphere, having an average sphere diameter of from about 0.01 microns
to about 10 microns. The nano-sphere comprises hydrophobic materials, cationic
conditioning agent or, cationic conditioning agent in conjunction with a cationic
charge booster to assist in adhering the spheres onto hair, skin, and fabric. The
invention further relates to a controlled delivery system where the release rate
of the active ingredients is synchronized with that of a sensory marker to convey
to the consumer the product performance.