Dome is the only company that manufactures and supplies Monofibre and Prolin. Monofibre is the brand leader for hair extensions, producing the finest, high quality hair extensions at a truly affordable price. Giving natural, undetectable beautiful hair extensions. Monofibre comes in a range of 18 colours that can be hand blended by brushing together to produce the exact match to the natural hair. There is a range of 6 premixed colours that have already been blended for you.