The new Swix LF3X is a hard synthetic fluorocarbon powdered wax which actually has more fluoro in it than its title suggests.
This product is typically used in conditions of very fine grained, cold snow which can cause considerable drag if the wax is too soft.
Use LF3X in addition to your primary melt-on products to increase their durability and improve the ski/snowboard base material resistance to abrasion.
Use when temp range is -12° to -32°C / 14° to -25°F.
Iron on scrape and brush, perhaps adding a little extra along the edges where abrasion is especially noticed.