This is a full-sized, never-opened Golden Gel conductive gel/serum that's meant to be used with a Ziip device (or probably could be used with any microcurrent or nanocurrent device.) It came with my Ziip, but I use a different conductive gel by Nuface, so this Golden Gel never got used or opened. Online it costs $129. As you can see, it's still in the plastic packaging divot and the empty hole is where the ZIIP device was. I think I bought this at the end of last year, but like I said, I only needed the device and never opened the gel. This listing is only for the gel, not the Ziip device. Here's how the Ziip website describes the gel: INTRODUCING GOLDEN GEL Choose Golden Gel when you want superhero actives that fill and firm the skin. Key ingredients include 5 growth factors; a combination of wrinkle-reducing peptides. Relax fine lines, fill and smooth the skin with 24-carat gold, calm and strengthen with hematite. The Golden Gel bottle is recyclable.