There are three broad categories of treating skin inserts: Liquids, Wool-Apply & Glide Tape. Here's an overview of each:

1) Liquids: Liquids are the most popular way to maintain skin inserts. Because the skin inserts are glued into the ski with a heat-sensitive glue, it's important to use designated products for skin skis since the solvents in them won't degrade the glue. That being said, it's better never directly apply liquid waxes onto your skin insert. Instead, apply the liquid to a cloth or fiberlene, then use the cloth to apply the liquid products to the skin insert.

Cleaners: Liquid skin cleaners are the best way to remove grim or old wax from your skin skis. Again, it's always best to apply the cleaner to a cloth first instead of directly dumping the cleaner onto the skin insert. Before applying any wax to the skin insert, it's best to use a cleaner on them to ensure the skin wax sticks to the skins.

Liquid Skin Ski Wax: Liquid skin ski treatments are super easy to apply: Get some product on a cloth, and use the cloth to apply the wax to the insert with a circular motion moving in a tip-to-tail direction. Each wax manufacturer has a different dry time so check the bottle to see how long you should let your skis sit before hitting the trails.

Wool-Apply: If you're using a wool-apply wax on your glide zones, you can simply run the wool over your skin inserts while you're at it. Make sure your drill is rotating in the same direction as the skin's haris.

Glide Tape: If you're using a glide tape, you can simply run the iron over the tape & skin to apply a thin layer of wax. You can use a metal brush after to gently loosen the wax on the skin.