A multilayer effect pigment includes a transparent substrate, a layer of high refractive index material on the substrate, and alternating layers of low refractive index and high refractive index materials on the first layer, the total number of layers being an odd number of at least three, all adjacent layers differing in refractive index by at least about 0. The present invention also relates to the methods for preparing these bioactive botanical cosmetic compositions and the uses of these compositions in various cosmetic formulations and as topical skin cosmetic applications. The housing contains at least one source of radiation. Stress detection may be performed automatically based on a decision procedure.