Smartseal's Natural Stone Colour Enhancer is a superb impregnating sealer which can be used on a range of hard surfaces, including but not limited to sandstone, granite, limestone, Indian sandstone and slate. This product will provide a colour enhanced finish which will bring out the original colour of the stone to make it look fresh and brand new. With a lifespan of up to 5 years, this product which will protect you against a range of organic growth like algae, moss and lichen spores. By altering the chemical structure of the stone which is porous, an excellent water repellence and stain resistance are created. How does it work? If you want a Colour Enhanced finish on your Natural Stone to bring out its original true colour, this product is for you, with excellent protection against unsightly staining and spillages. The product can also be used both externally and internally, see full application guideline for details. BENEFITS: WILL ENHANCE THE NATURAL COLOURS OF THE STONE LEAVES STONE DARKER OR DAMP LOOKING FULLY WATERPROOF WITHIN 24 HOURS RESISTANT TO MOSS & LICHEN STAINING LIFESPAN UPTO 5 YEARS CAN BE EXPECTED