Salon coloring is a type of hair styling that involves the use of various products to change the color of the hair. TINT, with 4 letters, is a type of hair DYE that is used to add subtle color to the hair. HENNA, with 5 letters, is a natural plant-based DYE that is used to add a reddish-brown color to the hair. DYE, with 3 letters, is a chemical-based product that is used to permanently change the color of the hair.