Cabot® bleaching stain is uniquely formulated to accelerate the natural weathering process of uncoated exterior wood. It contains a small amount of gray pigment and a chemical ingredient that actually bleaches the wood's surface. When first applied, this product gives a delicate gray tone and during the first few months' exposure it gradually turns into a beautiful, natural driftwood gray color. This weathered effect, if derived by nature, would require many years of harsh exposure, which often turns wood dark and uneven in appearance. Cabot® bleaching stain produces a self-protecting finish and achieves a uniform weathered look in only 3 to 6 months.