Unilever Home and Personal Care Usa, Division of Conopco, Inc.

Ilever Home & Personal Care Usa, a Division of Conopco, Inc.

William John Stead

Jonathan Edward Creeth

Andrew Joiner

Laurence Marie Bernard

David Michael Williams

A method is provided which treats or prevents gum disease involving applying to the gums an agent for maintaining or improving the permeability barrier of the gum.

Method for the prevention of gum disease

The present invention relates to a process for treating a mixture of a liquid oil and a copper chlorophyll extract with a mixture of at least 90% by weight of a C,-C,alcohol, and water at a certain concentration. The thus treated mixture is then suitable for making micro capsules with a green colorer liquid core material comprising said mixture by means of complex coaceration. These microcapsules can be included in oral care products to import a speckled appearance thereto. The liquid oil is typically sunflower oil or paraffin oil, and the C,-C,alcohol is typically ethanol or isopropanol.

Encapsulation

An oral care composition comprises capsules which comprise an encapsulated gent encapsulated by an encapsulating material stable in the presence of anionic surfactants, said encapsulated agent being capable of providing a cosmetic, sensory, protective or therapeutic benefit to the oral cavity, wherein the capsules' weight average particle size ranges from 100 to 2000 .mu.m and wherein the capsules are capable of being gradually crushed during brushing thereby releasing the encapsulated agent gradually during brushing, the foaming capability being maintained throughout brushing.

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Bebington, United Kingdom

William John Stead