Truth in Cigarette Labeling Act of 2006 - Prohibits a cigarette manufacturer from: (1) using a health descriptor (e.g., "light" or "low tar") on the label or the advertising of any brand of cigarette; or (2) making any claims or other representations based on data derived from the cigarette testing method established by the Federal Trade Commission (FTC) before enactment of this Act. Treats any violation as an unfair or deceptive act or practice under the Federal Trade Commission Act.