Bliss The Youth As We Know It Concentrate This potent serum is all hopped up with Hydroplex-3 (the same trio of professional-strength moisturizing ingredients used in out The Bliss Youth As We Know It in-spa facial) which has been encapsulated to work both on contact & over time-plus pearl extract & potent skin radiance boosters. So if you fancy a luminous glow plumper & smoother-looking skin & a rash of compliments (hey who doesnt?) look no further.