Factor-A is an esterified form of vitamin A propionate that can significantly assist in regenerating the appearance of photoaged skin, as well as aiding in clearing problem prone skin. James Fulton, M. D., co-inventor of Retin-A, developed this remarkable non-prescription product and has succeeded in lessening the side effects associated with Retin-A by 80%. Factor-ATM is also compatible with a glycolic acid skin care program, further enhancing the overall benefits.