Our kits were initially developed for dentists by one of America's leading dentists, Dr George Madray, DMD, also a renowned author and lecturer. He developed the gel for use in dentists surgeries in 1989 and was awarded a patent 2 years later on the system kit we sell. To find out more check out our website http://www.smile4you.com/ Video produced by http://www.videotile.co.uk