Category 1 finishes are the most transparent. They allow the most natural look of the wood to show through. Even with their transparency, they still provide a base level of CLEAR UV protection.
Storm Wood Life Extender
This unique penetrating clear wood stabilizer has been developed to prolong the life of wood and wood products. It is designed to retard warping, swelling, shrinking, and checking of unfinished woods. It resists mildew and other fungi* and repels moisture. It is able to be finished with any stain or paint.