Gillette introduced several innovations in razor blade technology over the decades, starting from the first safety razor in 1902 to the Sensor Excel razor with microfins in 1995. To boost sales of its Mach3 razor in India, Gillette launched a national marketing campaign in 2012 called "India Votes" that sparked a public debate on facial hair preferences. The campaign included online and in-person polls showing that most Indians and women preferred clean-shaven men. This successful campaign led to a 38% increase in Gillette's sales and a doubling of brand awareness in India.