Nicole Kidman’s hair is as long as her list of acting accomplishments — but she’s had a little help with the former. The star is luxury holistic hair brand Vegamour’s Hair Wellness Advocate (and an investor). Apparently after testing the products, Kidman “found her hair undeniably transformed,” saying it became thicker, fuller and “noticeably less frizzy.” One of her favorites is the Gro Hair Serum, a blend of vegan phytoactive ingredients to increase the appearance of hair density while reducing signs of shedding to promote thicker, fuller-looking locks. According to the manufacturer, there’s a marked improvement in as little as 90 days. 

Nicole Kidman isn’t the only fan, though: One bottle is sold every 22 seconds. On Amazon, where you can get it for over half off today, shoppers love it too. more than 2,000 shoppers give it a five-star rating. 

“My ‘temple’ area on both sides has really stated to thin, different reasons, becoming almost embarrassing if I wear a ponytail up or my hair pulled back in a bum,” said one shopper in her 40s. “I have tried so many different products… This is the only product that actually works. I actually have had my hair start to grow back in the desired areas, which have been my two main areas of focus.”

“Noticing improvement after 3 weeks,” shared another fan. “I like that it is thin and watery because I can apply it easily and it doesn’t gunk up my hair or make it look dirty or oily. It just barely has a scent, which is pleasant and fades quickly. My hair feels thicker and I can visibly see new growth where my hairline was receding.”