Thinning hair? These strand thickeners are on Black Friday sale starting at $6

File this silicone brush under "things you don't think you 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.

This brush makes it easy — just apply your shampoo or hair oil and go to town in circular motions for a minute or two. Not only will you unclog pores on your scalp and improve circulation, but the whole process feels amazing.

With more than 26,000 five-star reviews, this plant-based formula — which includes olive, coconut and jojoba oils — works to promote hair growth and improve hair strength safely and naturally. The mix of oils is the magic formula here: Coconut oil helps to moisturize hair and repair split ends (same with jojoba oil), so that new hair growth remains hydrated and healthy; some evidence also suggests that using olive oil on the hair helps to stimulate growth by, among other things, strengthening hair follicles.

Along with encouraging hair to grow longer and stronger, the oil works to soften and detangle and reduce blow-drying time, which can help ward off heat damage while styling.

Fine or thin hair tends to tangle more than thicker 'dos but many brushes can add to to thinning or shedding by tearing and damaging the strands you have left. Enter this wildly smooth and effective brush, which is a breeze to use on wet or dry hair and gentle enough for even those of us who are balding a bit. At this Black Friday price — nearly 60% off! — it's also a major value. 

This incredibly effective and useful unisex product shakes into and attaches to existing hair follicles like a magnet, lending the appearance of a thick, lustrous mane as it goes. It's among the best products I've found for disguising shedding and thinning — as 25,000 5-star Amazon reviewers can attest. Right now, at more than 40% off, the price is extra right. 

One big problem with fine, thin hair is that it's hard to find moisturizing, defrizzing products that won't make your strands look limp. Enter OGX's weightless dry oil spray, which helps smooth fly-aways, mend split ends and eliminate fuzzy, frizzy hair without it looking greasy or heavy.

"This oil is extremely lightweight, does not weigh down hair and the spray bottle projects the perfect amount in each spray," said one reviewer. "I have fine hair and it leaves it soft, not greasy, and there's no lack of volume."

It seems like hooey, but it's actually true: Topically applied rosemary oil has been clinically proven to initiate new hair growth and help prevent further loss. In fact, a 2015 study suggests that rosemary essential oil is as effective as minoxidil at growing new hair in mice.

This is an excellent rosemary oil should you want to try it out: Mielle Organics' formula contains follicle-stimulating biotin, and it's color-safe. It's also paraben-free, highly concentrated and an Amazon bestseller with more than 74,000 five-star reviews. 

Some forms of hair loss can be caused by product buildup on the scalp and, if your hair is shedding and looking dull, Neutrogena's Healthy Scalp shampoo may offer relief. It's non-medicated, color-safe and sulfate-free and, while the formula is strong enough to dissolve built-up gunk on your scalp and strands, it's not too harsh to be used occasionally on fine or thinning hair.

Best of all is the grapefruit scent, which is citrusy and fresh but not at all sweet. 

When your thin hair is fragile like mine is, frequent washing comes with serious risks. Just washing and blow drying can lead to excess shedding, which is why I avoid it as often as I can. Instead, I use high-quality dry shampoos a few times a week, like this one from Dry Bar. It smells amazing (like a luxe Hawaiian vacation), freshens my mop and boosts my hair's volume too. 

Scoop it up now at 30% off — it rarely, if ever, goes on sale. 

Pura D'Or's bestselling anti-thinning shampoo and conditioner rarely go on sale! Now's the time to scoop up this award-winning set, made with a mix of biotin and organic ingredients like nettle extract, pumpkin seed and black cumin seed oil. It's clinically proven to reduce hair thinning while promoting hair strength and reducing breakage.

More than 30,000 happy Amazon customers give it a perfect score, including one ecstatic fan who said: "10 stars! I've been dealing with hair thinning and some breakage since 2020 and I've done everything and nothing worked. I've only used this shampoo and conditioner 4 times in 2 weeks and I have a lot of baby hair growing on top of my head. ... Whoever made this product, thank you very very much!"

Real Housewives of Beverly Hills star Kyle Richards swears by this hair elixir which she says gives her mane "the look and feel of 3,000 more strands." Right now, it's at the lowest price I've seen. 

The lightweight, nonsticky spray is made with keratin, collagen and biotin and — according to both Richards and numerous five-star reviewers — it effectively boosts volume along with strengthening fine, thin hair. "I have tried three other spray-in hair thickeners and this is the only one that has truly made my hair feel fuller," raved one five-star fan. "The price is also reasonable. I can't afford super pricey hair products that I use daily."

Another major deal alert! This top-selling hair treatment is a favorite of celebs (including Nicole Kidman) and we can see why: The wildly popular serum promises to promote growth and improve the appearance of thinning hair, leaving it looking thicker and fuller and, with this Black Friday deal, it's nearly 30% off.

"After six weeks of usage, I can tell a notable difference in the amount of hair I am shedding as well as a visible increase in my hair density," said one user. "I have a long way to go, but I am loving the results I am seeing now."

At first, you're going to feel like an overindulged princess when sleeping on this luxurious silk pillowcase. 

But then you learn the facts: Silk pillowcases support the health of skin and hair. Research shows they can help prevent shedding and breakage and keep your hair from frizzing overnight, leading to less styling and a healthier mane overall.

If I could only purchase one thickening hairspray for the rest of my days, it would be this truly fantastic product from beloved hair care line Living Proof. The lightweight, gorgeous-smelling spritz manages to thicken my fine strands without making my hair at all crunchy or weighed down. It's one of the few hair care products I travel with — the dry formula also extends shampoo time by days. I'm stocking up today: this Black Friday price is the lowest I've seen. 

A rare sale! Nioxin's award-winning hair treatment works for thinning locks on several levels, providing moisture and strengthening the strands to help thwart breakage and cleanse the scalp of follicle-cloggers like sebum and other oils. It comes in numerous levels depending on the severity of your thinning.  

The products are wildly popular, with Alyssa Milano praising their effectiveness and more than 2,000 five-star Amazon reviewers waxing poetic.

"Perfect for women with thinning hair!" exclaims one enthusiastic user. "I’ve tried everything once my hair started to thin as I got older, and nothing has worked until I found this hair system. A friend of mine asked me what I used and now she is using it and seeing [results] with her hair."

A quick Nutrafol review: I did not want to like this product. It's waaayy too expensive. And I don't like swallowing four horse pills every morning. BUT — and this is a big "but" — when taken consistently, Nutrafol really works for thinning hair, it helped stop my shedding and, after four months, I even saw new hair growth.

Right now is a good time to try it for yourself: a one month supply is currently 20% off.