Having our boat stay in Virginia or points south throughout its life, the sun is intense and the wood needs good protections. However, there is enough exterior wood, that applying endless coats of varnish would be wearying. With Cetol, a single maintenance coat is enough to keep the wood looking great year after year. And the Natural Teak is much better at letting the wood's grain show through than the Cetol Marine Light that we used before. We've used Cetol for 7 years now, and Natural Teak for 4 years. I'm a firm believer in this product.