Number One on our 鈥渉air envy鈥 list? Blake Lively, of course. It鈥檚 a ranking that needs no explanation: Just catch a glimpse of the actress鈥檚 flowing blonde tresses twisted back into a loose braid or curled to carefree perfection and you鈥檒l feel the jealous pangs too. While we can plait our manes to match Blake鈥檚 latest styles (and trust us, we do), we鈥檝e been kept guessing on what it actually takes to maintain such bouncing bombshell locks. Knowing Blake鈥檚 penchant for DIY, we had a suspicion that the key to her healthy hair was more likely to be a hack than an opulent spa treatment, and as it turns out, our hunch was right. In an exclusive interview with beauty website Byrdie, Blake spills on the secret to keeping her tresses picture-perfect, and it鈥檚 a weird one.

1-Blake

鈥淢y mom taught me this really great beauty tip,鈥 Blake dishes. 鈥淪he used to put oil or mayonnaise on the bottom half of her hair before she would shower. That way, when she would shampoo, the soap wouldn鈥檛 strip the bottom of the hair and dry it out, making it brittle.鈥

2-Mayo

As bizarre as the hand-me-down hair hack may sound 鈥 it鈥檚 one of those at-home remedies surrounded by a constant stream of 鈥 yeah, but does it really work?鈥 鈥 the sandwich condiment as tresses treatment seems solid. Mayo is an emulsion of oil and egg yolks, two power ingredients when it comes to giving your hair a healthy boost 鈥 oil for silky shine and the amino acid in the yolks for promoting the formation of keratin. So thanks to Blake, we can pretty much consider this hair myth a beauty truth. Click through to Byrdie to read more of Blake鈥檚 beauty revelations, or to try this hair mask out at home, follow this Hello Giggles tutorial: Apply full-fat mayo to your scalp, massaging it in until you鈥檝e covered your whole head, then work it into the rest of your hair from your roots to your tips. Wrap it in a warm towel to help along its conditioning powers and let it set for 30 to 40 minutes before you rinse and shampoo. Turns out we were one pantry staple away from looking like Blake this entire time.

What鈥檚 the weirdest thing you鈥檝e used in a DIY beauty routine that actually WORKED? Tell us about your go-to hair and beauty hacks (hand-me-downs too!) in the comments below.

(Photo via Mike Coppola/Getty)