well that's true , but you don't have to use the curlier everyday, and you can use natural shampoos and conditionars from natural herbs to improve the hair quality. Natural is the best,,Like the brand "Biolage", tha's what I use, and they have specific ones for straight, curly or waivy and many other kinds.Also, they have products that would naturally make the straight hair curly and give volume, my advice ,just check that brand,,