We have been given a used about 8 years old living area in light gray microfiber, the course despite proper care had some signs of wear. After 2 1/2 bottles Pro 8, 5 liters of distilled water and four hours of intensive work, the good piece looks almost again as fresh from the furniture store. Highly recommended, more good advice you get from other reviews. (About it rub Ex. With soft towel if the substance after drying appears somewhat rough, ...) With the naked spraying is not enough - but that is indeed nowhere promised. I'll get me a bottle for emergencies anyway :)