Choose White for all-round glide and base preparation; Hard Black for a hard layer on black ski bases, especially in cold new snow or abrasive conditions. Both NF Sisu liquids are rated for all temperatures. Their different roles matter more than a temperature split.

Which Sisu do you need?

White is a sensible starting point for routine training wax and base preparation. Hard Black adds a choice for conditions that demand a hard surface. Both can be used on their own, so a separate race topcoat is optional. For a specifically condition-matched race wax, see NFX Extra Tuned.

Standard application with a hand brush

1. Clean the glide zones with SISU Glide Cleaner as directed and let them dry.
2. Shake the bottle thoroughly.
3. Spread an even layer with the sponge.
4. Leave to dry for 20 minutes.
5. Finish to a shine with a clean nylon brush.

This liquid layer needs no iron or scraper. Full preparation of a new or freshly ground ski can involve additional stages; this routine describes applying the liquid wax.

Equipment and practical checks

Alongside the fluor-free 60 ml sponge bottle, the basics are cleaner, fibre cloth and a nylon brush. Cork, merino rotary tools and powders are not needed for this hand-brushing method.

Use Hard Black for base preparation on black ski bases. Let the wax dry properly before hand brushing; shorter waiting times from other application methods do not apply to this routine. More wax will not correct a dirty base or missing brushing. Keep glide wax off skins and classic grip zones.