What is the connection between the first and second layer of wax on skis?

Glide wax is selected to minimize sliding friction for both alpine and cross-country skiing. Grip wax (also called "kick wax") provides on-snow traction for cross-country skiers, as they stride forward using classic technique.

Explanation:

The two main types of wax used on skis are glide waxes and grip waxes.