They are available in gel, tube, and liquid formats.
Common features include high‑shine or mirror-like finishes, shimmer or bling effects, plumping/volumizing ingredients (in lip glosses), and moisturizing or nourishing formulas that enhance shine.
Removal and maintenance vary by system: some gel gloss systems specify a dedicated remover, while gel-hybrid top coats typically remove like regular nail polish. Optional top coats can be applied to extend wear.