Without question Amanda Seyfried is one of my favorite celebrities, hair-wise. She’s talented and stunning! Her porcelain skin and huge blue eyes are crowned with luscious blonde hair that always looks perfect even if she’s just relaxing on an off day.

Recently, Amanda revealed that her secret to beautiful hair isn’t something she does, rather something she doesn’t do. She says she only washes her hair 3 times a week. In between washes, she uses dry shampoo to keep her hair looking fresh. Dry shampoos absorb excess oil and help build volume so that your hair doesn’t look flat or greasy between washes.

If you’re wondering to yourself why on earth anyone would skip washing their hair, here’s the scoop. Over washing your hair can actually be harmful. Many shampoos have harsh sudsing agents (the stuff that makes your shampoo lather up like crazy) that wash away the scalp’s natural oils. When used too often, sometimes the result can be an irritated, dry scalp! These oils also keep your hair looking shiny and healthy. Of course, too much oil makes your hair look greasy and limp, but mostly what makes our hair get “gross” when it’s dirty is outside elements and pollution, and styling products. Sulfate free shampoos and conditioners are much better about not stripping your hair of all its natural oils, but some people prefer to just wash less often as well. Clearly it works well for Amanda! She looks fabulous.