Think about how much styling product you use on your hair, and you'll begin to understand why it needs the occasional deep clean. I've recently fallen in love with Tonic from Bumble and Bumble, which leaves my hair looking clean and bouncy for days on end. Seriously, I could go for three days without looking like Countess Von Greasyhair.

Inspired by my love of Tonic, I want to know what kind of deep-cleansing shampoos you like. So for this week's Beauty Mark It challenge, tell me by Beauty Marking your favorites and tagging your choices with the phrase "cleansing shampoo." I'll feature the readers' favorites on BellaSugar next Tuesday, July 24.

To learn what a Beauty Mark is and how to make one, click here. To see some of my favorite online beauty stores,

Saks Beauty Place
Victoria's Secret Beauty
Fred Segal Beauty
Bergdorf Goodman