The Cult of Celebrity has its prayer books (Us Weekly), rites (Red Carpet), miracles (Alec Baldwin’s career), and disciples (Perez). All that’s missing are the sacred relics. Behold FamousFlakes, a pop-up biotique offering beautifully packaged vials of your favorite celeb’s skin and hair. Founder Charles Remarque acquires the goods through a vast network of hotel housekeepers, aestheticians, surgeons, and a few celebrities themselves. Microdot arrays confirm genetic authenticity (and everything comes with a certificate of proof). There are hundreds to choose from: Jake Gyllenhaal, Mike Bloomberg, Courtney Love. James Frey devotees can get a Billion Little Pieces in a vacuum-sealed cruet (Remarque swears it’s real); Bono voluntarily exfoliated himself and markets the slough under the Product (Red) line. Parker Posey and Chloë Sevigny are in the works. Remarque will even bottle your flakes for a fee. After all, skin sells. For more information, go to famousflakesnyc.com. By appointment.