Not for straight hair
"I wanted so much to love this. I have thick, straight hair that sometimes has a slight wave to it. I tried this product on towel dried wet hair and on damp hair, and I tried different amounts and application methods. Invariably, the result was a lot of frizz and and greasy roots. I suspect it's just not made for straight hair, but I wish that was clearly stated somewhere. Hoping my curly-haired boyfriend has more luck with it."