HS6 Blue -6° C/-12° C is a very versatile and fluoride-free wax from Swix. The application ranges from powder snow surfaces to racing and can also be used as a preparation wax on cold skis. HS6 has good durability and offers high performance on both natural and artificial snow. The speed of the iron should be about 8-10 seconds on skating or alpine skis. The wax can be warmed up again after cooling to room temperature (10 min) for better durability. Please note that it's important to have a good iron in order to melt the wax effectively.