This post was updated on January 25, 2025 Hi, I am Scott Paul, a leading exterior restoration contractor and business owner with over 30 years of experience in exterior wood decking. My TWP Natural Effect Impregnating Stain review is based on my history as a wood restoration contractor and actual hands-on testing, all designed to present you with the top deck stain choices. See here for more info about me. TWP Natural Effect Impregnating Stains TWP® Natural Effect utilizes state-of-the-art European waterborne technology and is designed to revolutionize exterior wood maintenance… …while at the same time significantly enhancing performance! Spend more time enjoying your investment and less time maintaining it with TWP Natural Effect. Natural Effect is the superior way …