Dr Mohsen Solliman، Professor of Dermatology in Qasr El Einy Faculty of Medicine، Cairo University، said all hair pigments should by tested before using them. He recommends women and men to apply little portion of a pigment on skin to reassure it doesn’t cause irritation. He added that any ingredient of pigment may could be allergic to people suffer from disorder of the immunity system. Dr Solliman pointed out during a telephone contact with presenter of Sabah El Ward” show aired today on “ten” Space Channel، that some chemicals included in pigments could lead to death. Those chemicals irritate skin and extend to mucus membrane of the respiratory system and cause death with a short range of time. He affirms that pigments based on natural resources such as henna are preferable.