not for long thick and wavy hair [SEP] these things are lousy for long and thick hair not comfortable and made my hair look odd due to the coiled nature as for dents i didn t notice a difference removing it was a pain and pulled out hair my hair is very long waist length thick and wavy obviously this isn t a product for my type of hairby the way i was originally sent a small dog play ball took me a bit to find out why i received it error by the vendor beauty collection so if you get some weird item check your orders