Mich. Comp. Laws § 445.108

Sec. 8. Any person to whom is sold any goods, wares or merchandise in the course of an unlawful trade practice at his option, on discovery of such unlawful trade practice and on due notice to the seller, may rescind the sale and recover back from the seller the price or any portion thereof theretofore paid by him to the seller. The right of rescission must be exercised within 8 months subsequent to the date of the sale complained of.