Kitsune, Piglettail,
I have natural curls too. Used to buy this clear liquid that is a straightening serum. Can get from Watsons
Pro Vitamin Fx Special Effects Straighten Out Hair Straightener & Smoothing Treatment
Straighten Out is a temporary, non chemical hair straightener which is activated by the heat of your blow dryer. It instantly straightens permed, naturally curly and wavy hair into a smooth, straight, sleek and shiny look. Straighten Out will keep hair straight and smooth until your next shampoo, defying your frustrating frizz, even in humid weather