Yahoo Senior Beauty Editor Jennifer Romolini swears by this frizz-reducing bestseller.

“Every once in a while a popular internet-famous product comes along that I think will never in 100 years work and then am pleasantly surprised (OK, more like shocked) when it does,” she admits. “Such was the case with this strange little tube of the TikTok-famous collagen and protein hair mask from Elizavecca.

It’s a repairing treatment that’s meant to render even the driest, most straw-like hair into silky strands. You work it into your hair after shampooing and, after 5–15 minutes, the before-and-after is seriously profound: my thin, dry, longtime dyed-blonde mane was bouncy, soft and smooth as a satin sheet and, best of all, didn’t feel weighed down. Though it does make your hair slightly greasier than normal, the conditioning impact is worth it — my results lasted for weeks.”

While not the largest discount, you can’t argue with paying just seven bucks for a tube!

Check out her roundup of Amazon beauty products she’d buy again for more.