(Cover) - EN Star Style - Jessica Biel says she perks her hair up using Moroccan oil.

The actress-and -model sports perfect brunette locks that always look pristine as part of a glamorous guise.

But Jessica admits that there are times when the strands dont feel as smooth as she would like them to be - although she has a remedy.

My hair rescue is Moroccan oil. It has transformed my hair. Im always getting it blow-dried and it gets crispy on the ends, the 28-year-old told InStyle magazine. But I get out of the shower, put this on and it makes my hair so silky. I feel like, Oh, my hairs not going to fall out now!

While the superstar has returned her hair to a brown shade, she turned blonde for a period of time.

And she enjoys the more effortless darker tone because having to constantly maintain a lighter appearance tired her out.

My hair colour right now is the most natural Ive had in a long time. Im supposed to be this colour, so of course its the most flattering, Jessica explained.

Being blonde was hard to maintain. Id wake up in the morning and be like, Oh, hello! But I was at the hairdressers every week having my roots done. (C) Cover Media