Cellex-C Complex is the original formulation that in the early 1990s pioneered the present worldwide interest in the topical application of vitamin C. Originally launched in 1991, Cellex-C was the first topical ascorbic acid formulation to be successfully commercialized. The synergy of the original patented complex combined with proprietary technology invented by Cellex-C sets Cellex-C apart from all other vitamin C products and produces results that no other product can duplicate.