Sunsilk Thick & Long system is the ultimate secret for thick & long hair. This Sunsilk hair care shampoo with a powerful formula contains Biotin, a vitamin proven for hair growth and natural ingredients like Castor Oil which is known to be deeply nourishing and helps fortify every strand. Your hair looks 3x thicker* & grows stronger and longer With the thick and long system, you can style your smooth hair for any possibility and enjoy unlimited hairstyles.