I have no idea what this is made of -- stardust maybe?  But it is super slick and just the best feeling stuff that I have come across in ages.  It helps fill in a few wrinkles and provides a nice base for your foundation.  I did use this with the creme powder also by Vincent Longo and this will be amazing for summer.  I have also tried this under Clinique foundation (wrinkle repair) and it works nicely.  You do need to use a moisturizer under this to get the full effect.  Just be sure to let everything soak in (about 5-10 min. apart) before you start your foundation application.