I use L'Oreal hair products (shampoo, conditioner and restorative masque- this one about every two weeks) and I think the results are fine. I use Henna too, because of the stupid white hairs that are begining to show.
My hair is naturally wavy, and depending on the humidity it's actually curly. But I prefer to wear it straighten, so I have my hair chemically straigthen every two months. And it looks really, really natural, you can ask Aqua if you want, she can tell.