Samantha Hunter is a professional copy editor who has worked with Ms. Magazine, Spin and VH1. She has also written for MarthaStewart.com, Essence.com, Esquire.com, GoodHousekeeping.com, RealSimple.com ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Unlike masks or deep conditioners, which are more of a weekly treatment, the best leave-in conditioners ...

While each product featured is independently selected by our editors, we may include paid promotion. If you buy something through our links, we may earn commission. Read more about our Product Review ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Amanda Rosenthal Amanda Rosenthal is a writer covering skin care and beauty.

If your strands have been looking scruffy lately, you probably need more than just plain old conditioner to bring your hair back to life. That’s where a weekly or biweekly deep-conditioning treatment ...