Contains LHA, a new proprietary acid "to activate skin renewal while being gentle on skin." Also melanin inhibitors (Ellagic Acid), resorcinol, licorice root, and glycolic. The new Radiance Brush Head is said to "remove sebum and surface-level pigmentation to diminish the appearance of hyperpigmentation and dullness."
The kit contains an AM cleanser, PM peel wash, brightening activator serum, and the new brush head, for $125:Sonic Radiance - Skin Brightening Products for Even Skin - Clarisonic. Also at Nordstrom, Sephora, etc