Thinning hair? Buy beauty editor-recommended products starting at $4 on Amazon

File this silicone brush under “things you think you don’t need until you try them.” Regular scalp massages are one of the best and first steps you can take if you want to stimulate hair growth.

With this brush, it’s easy: just apply your shampoo or hair oil and rub it in in circular motions for a minute or two. Not only will this help open the pores of your scalp and improve circulation, but the whole process will feel great too.

Grab this thing while it’s 50% off.

This lightweight scalp health-promoting spray was developed with the help of dermatologists to add volume, bounce and strength to even the thinnest hair.

It contains vitamins B and E and nourishing peptides that add structure to hair at the roots without leaving it brittle or dry like similar treatments. The result is soft, silky, fuller locks – for under $10.

“I was looking for a root lifting product that wouldn’t make my scalp itchy or sticky,” said one fan. “This is a very good product. Smells good. It doesn’t make my hair greasy either, so I don’t have to wash it for a few days. I don’t need an extra product every day either.”

It sounds like nonsense, but it’s actually true: Topical rosemary oil has been clinically shown to stimulate new hair growth and prevent further hair loss. In fact, a 2015 study suggests that rosemary essential oil is as effective as minoxidil in promoting hair growth in mice.

This is an excellent rosemary oil if you want to try it: Mielle Organics’ formula contains follicle-stimulating biotin and is color-safe. It’s also paraben-free, highly concentrated—and an Amazon bestseller with nearly 70,000 five-star reviews.

A big problem with fine, thin hair is that it’s hard to find moisturizing, anti-frizz products that won’t make your hair look limp. That’s where OGX’s Weightless Dry Oil Spray comes in, smoothing flyaways, repairing split ends, and eliminating frizzy, frizzy summer hair without making it look greasy or heavy.

“This oil is extremely lightweight, doesn’t weigh hair down, and the spray bottle dispenses the perfect amount with each spray,” said one reviewer. “I have fine hair and it leaves it soft, not greasy, and not lacking in volume…”

At first glance, you might think: Why on earth do I need a silk pillowcase? AM I AN EMPRESS? Is this Hollywood, 1934? Should I start sleeping with a face made of cold cream and calling people? there-ling? Do I also need a silk coat and high-heeled slippers?

But then get the facts: Silk pillowcases support skin AND hair health. Research shows they can prevent hair loss and breakage and keep your hair from getting frizzy overnight, resulting in less styling and an overall healthier mane.

There’s so much to love about this salon-quality, thickening, moisturizing shampoo and conditioner duo. First of all, it contains no harsh chemicals. It’s safe for all hair types (including color-treated hair) and hasn’t been tested on animals. But the real stars here are the ingredients: Biotin, vitamin B, and caffeine are proven to nourish fine hair follicles and stimulate growth.

With 11,000 five-star reviews, this popular set is a steal at 20% off. “My hair has never felt so good,” said one reviewer. “My hair is thin, but it doesn’t weigh it down. I’m also noticing a lot less shedding in my brush and styling tools.”

For more options, check out our roundup of the best shampoos for thinning hair.

Big deal, watch out! This hair treatment is a best-seller and a favorite among celebs (including Nicole Kidman), and we know why: The hugely popular serum promises to improve the look of thinning hair and make it look thicker and fuller.

“After six weeks of use, I can see a significant difference in the amount of hair I’m losing as well as a visible increase in my hair density,” said one user. “I still have a long way to go, but I’m thrilled with the results I’m seeing now.”

A rare special sale! Nioxin’s award-winning hair treatment targets thinning hair on multiple levels, hydrating and strengthening hair to prevent breakage while thoroughly cleansing the scalp of follicle-clogging toxins like sebum and other oils. It comes in multiple levels, starting at level 1 through to level 4, depending on the severity of your thinning hair.

The products are extremely popular. Alyssa Milano praises their effectiveness and over 7,000 five-star reviewers on Amazon rave about them.

“Perfect for women with thinning hair!” exclaims one delighted user. “I tried everything when my hair started thinning as I got older and nothing worked until I discovered this hair system. A friend of mine asked me what I was using and now she’s using it and seeing (results) on her hair…”

A quick Nutrafol review: I didn’t want to like this product. It’s faaaaar too expensive. And I don’t like swallowing four horse pills every morning. BUT – and this is a big “but” – if you take it regularly, Nutrafol really does help with thinning hair. It stopped my hair loss and after six months I could even see new hair growth.

I’ve been using it regularly for two years and it has made my hair thick, not quite as thick as it was in my 20s but really close. Today is the day to try it out while it’s rarely on sale.