ColourPop Solstice with the Mostest is a cool fuchsia with a sparkle finish that is permanent and retails for $4.50. In comparison, Melt Cosmetics Ultraviolet #2 is a cool fuchsia with a glitter finish that is limited edition and retails for $22.00.
Melt Cosmetics Ultraviolet #2 is 90% similar — it is less shimmery, darker.