Patent ID: 7097348

Claim:
A method of mixing a cosmetic preparation at a point of sale, the method comprising: a) providing a container comprising an open top, a bottom and a sidewall between the bottom and the top; b) adding a first base suspension that is free of colorant other than titanium dioxide to the empty container thereby coating the bottom and at least a lower portion of the sidewall with the first base suspension; c) adding one or more suspensions comprising one or more colorants on top of the first base suspension; d) adding a second base suspension on top of the one or more suspensions comprising one or more colorants, the second base suspension also being free of colorant other than titanium dioxide; e) closing the open top of the container with a lid after part (d) without adding any more suspensions containing colorants; and f) mixing the suspensions within the container by applying mechanical energy to the closed container.