Hextech skins are changed by applying hextech-themed decals to them using Hextech crafting stations.
Hextech skins are styled after the Hextech crafting system, which is itself a tribute to the Hexen engine, which was used in the 1999 game Hexen. Hextech skins are also obtained in other games that use the same asset store.
Hextech skins are skins that are obtained in League of Legends, a multiplayer online battle arena video game developed by Riot Games.