International Specialty Products, Inc., formerly known as ISP Holdings, Inc., operates as a multinational manufacturer of specialty chemicals and mineral products. The company manufactures a variety of specialty chemicals having various applications in consumer and industrial products. It uses proprietary technology to convert various raw materials into value-added specialty chemicals developed to meet customer requirements. The company's specialty chemicals business is operated through three segments: Personal Care Segment that sells its products to the skin care, hair care, toiletry, and cosmetic markets; Pharmaceutical, Food, and Beverage Segment that sells its products to the government regulated industries; and Performance Chemicals, Fine Chemicals, and Industrial Segment that sells its products to various consumer and industrial markets. It manufactures mineral products consisting of semiceramic-coated colored roofing granules, algae resistant granules, and headlap granules. These granules help in providing weather resistance, decorative coloring, heat deflection, and increased weight in the shingle. The company markets its specialty chemicals using a worldwide marketing and sales force, typically chemists or chemical engineers. It conducts its international operations through 39 subsidiaries and 48 sales offices located in Europe, Canada, Latin America, and the Asia-Pacific region. The company markets its mineral products to residential and commercial roofing manufacturers. It sells the mineral roofing granules primarily to the United States roofing industry for use in the manufacture of asphalt roofing shingles. The company was founded in 1991.