Nutrafol and a Bunch of My Favorite Hair Thickeners Are on Rare Sale for Black Friday—Shop ‘Em All Here

"From the first wash, my fine hair felt fuller and healthier—no more limp strands. I love the lather of the shampoo, and the conditioner delivers just the right hydration without weighing my hair down. The soft floral scent turns my shower into a mini spa, and the chic packaging looks great in my shower. This duo has truly changed my hair care routine for the better, and it honestly makes every day feel like a good (voluminous!) hair day."—KARA MILLER, DESIGNER

“I’ve tried so many formulas to combat postpartum hair loss, but this is the first one I’ve genuinely felt has made a difference. Although it’s sulfate-free, the shampoo lathers gorgeously and leaves my scalp feeling squeaky clean, while the conditioner keeps my hair bouncy and soft. Best of all, my hair feels noticeably thicker after a month of consistent use.” —CORINNE SULLIVAN, SENIOR NEWS EDITOR

“After having a baby last year, my already fine hair thinned so much. I haven’t been able to find any product that made my hair feel any fuller—and I’ve tried lots—until I started using the John Frieda UltraFiller+ shampoo and conditioner. They seriously make my hair look like it’s doubled in volume after I’ve used them.” —KRISTIN GIAMETTA, FORMER VISUALS DIRECTOR

"So many conditioners make my fine hair fall flat, but this one from Goldwell somehow smooths and nourishes my strands without feeling the slightest bit heavy. Truly a must-try for long, fine hair or anyone concerned with conditioner making their hair greasy." —LB

"I've been using this shampoo for a few months now, and my hair has genuinely never looked better. My scalp feels clean and refreshed afterward, and my roots have more volume than basically any other formula I've tested. But most of all, I seriously do feel like my hair is growing a bit more quickly. Maybe because my scalp is finally getting treated with love and respect, or it's all the fantastic extracts in this. But my roots are coming in quicker than ever." —BETH GILLETTE, BEAUTY EDITOR

“Divi’s Scalp Serum has become a mainstay in my haircare routine. I love using it on day two or three after washing my hair to keep my scalp fresh. It’s water-based, so it doesn’t make my hair greasy, meaning I don’t immediately have to wash my hair after either. I even apply it on days when I’m slicking my hair back for some added nourishment.” —JASMINE HYMAN, ASSISTANT BEAUTY EDITOR

“Hair oils usually don’t work well with my fine, oily hair, but this pre-wash oil changed my mind. It helped my scalp feel nice and clean while gently smoothing my frizz.” —ERIKA SMITH, FORMER EDITOR

“The most important thing you need to know about my hair journey is that I’ve been spending so much time and money on eBay buying the same (now discontinued) hair mousse because it has been the one thing that has worked for me for years. So to have something that could (a) replace that and (b) be so much better was something I never expected. Since I started using this, I’ve never gotten this many compliments on my hair before. It’s clearly a lot healthier for my hair and gives me more volume than I could ever ask for. And it’s great for small touch-ups too.” —TAMARA FUENTES, ENTERTAINMENT EDITOR

“I crave endless volume, but my fine, dense strands have other ideas. Needless to say, I keep a stash of texturizing spray to revive my hair. This is by far the BEST I’ve ever tried. Listen, no other spray has transformed my sweaty post-gym hair into a blowout-worthy voluminous ’do. R+co either used witchcraft to make this or somehow bottled magic.” —MARY HONKUS, CONTRIBUTING BEAUTY EDITOR

"The Batiste hype will never die. I love it, and Cosmo readers do too. It's won best dry shampoo for four consecutive years in our Readers' Choice Beauty Awards. My love for every formula, especially the volumizing one, which is terrific for fine, thin hair." —LB

“Give it up for this root lifter spray, which simultaneously bulks up my fine hair and makes my hair touchable and soft. I just spritz it in section by section while my hair is damp, then blow-dry with a round brush for big hair vibes.” —BETH GILLETTE, BEAUTY EDITOR

"Well, in case you haven’t heard, voluminous bombshell hair is very in and here to stay. To achieve effortless, salon-worthy volume, you simply spritz a bit of this. It’s literally that easy—a little bit gives you body for dayyyyys." —LB

“With just a few pumps, this product tamed my frizz and added a gorge gloss to my hair. Bonus: It smells really freaking good and doesn't weigh down my fine hair.” —MH