Yes, this lightweight shampoo deep-cleanses your scalp and hair without leaving them dry. (In fact, it leaves them feeling incredibly hydrated.) But what’s especially cool about it is that it contains prebiotics that help balance your scalp’s microbiome, promoting a better environment for your hair to grow—and that means healthier hair in the long run. And while it’s doing all that, it also makes your hair look fuller.

Generally, thickening shampoos work in two different ways. Often there is a thickening agent like protein or something else that sticks to the hair and superficially makes it look thicker after you wash with the shampoo. Some will also (or instead) contain ingredients like vitamins or plant extracts that can nourish and balance the scalp and hair to improve their health and sometimes remove excess oil that can weigh down hair. (Astringent ingredients like tea tree oil are good for this.) Others can contain ingredients that block DHT and stimulate hair growth. Keep in mind that any hair-growth claims made on shampoo bottles are tricky because, while it’s a topical product, people tend to wash it off quickly. In order to achieve any hair growth or hair-loss prevention, you generally need to let it sit on your scalp for a few minutes before washing it off.