Eight types of shampoo are being withdrawn from the Saudi market for containing dioxine substances that might cause cancer, an official statement said Friday. The brands are Himalaya Herbals, Icare, Natural Care, Sehat – Cedr shampoo (two types), Corpore Sano Baby shampoo, Black Seed, and Double Rich. Customs authorities have been alerted to stop clearance of these products that include children's shampoo.