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Early Prime Day beauty deals for thinning hair are here — some as low as $4!

Save up to 50% on everything from Nicole Kidman's favorite hair-growth serum to thickening shampoos, conditioners and styling products

Rusk hair mist, scalp massage brush, Vegamour's Gro Serum, Luseta shampoo and conditioner
The best Prime Day beauty deals for thinning hair include Vegamour's Gro Serum, a Scottish hair thickening spray, a $4 scalp massage brush and a mega deal on hair strengthening shampoo. (Amazon)

Prime Day sales are the ideal time to try new beauty products without the guilt of a serious hit to your wallet. And, if you're experiencing a specific beauty issue such as thinning hair (like 40 million men and 20 million women in the U.S.), this is your opportunity to check out trusted, tried-and-true solutions at a fraction of their normal costs. It's also a chance to try on new routines (hair growth serum plus scalp massage brushes plus thickening mists, for example) you might be wary to venture into at full price.

Quick overview
  • Vegamour Gro Hair Serum

    $48$64
    Save $16
  • Luseta B-Complex Shampoo & Conditioner Set for Hair Growth

    $24$35
    Save $11 with coupon
  • Rusk Thickr Thickening Myst

    $15$17
    Save $2
  • Hilph Silicone Scalp Massager

    $4$8
    Save $4
  • Majestic Pure Rosemary Hair Oil

    $10$15
    Save $5
  • OGX Argan Oil of Morocco Weightless Dry Oil Spray

    $9$14
    Save $5
  • Ouidad Advanced Climate Control Featherlight Volumizing Foam

    $20$26
    Save $6
  • AG Care Fast Food Leave-On Conditioner

    $48$60
    Save $12
See 3 more

I'm 51 and I've had thinning hair since my mid-40s. The trick I've found to keeping my hair healthy and full is a combination of treating the root (no pun!) cause with serums, oils and regular scalp massage and managing the appearance of what hair I have left with high-quality styling products (like the best dry shampoos).

Here are a few of my favorite items for fine and thinning hair — all currently on sale at Amazon ahead of Prime Day.

A favorite of celebs including Nicole Kidman, this top-selling serum was formulated to improve the appearance of thinning hair, leaving it looking thicker and fuller — and right now it's discounted at 25% off. 

$48 at Amazon

There's so much to love about this thickening, moisturizing, salon-quality shampoo and conditioner duo. For starters, it contains zero harsh chemicals. It's safe for all hair types (including color-treated) and never tested on animals. But the ingredients are the true stars here: Biotin, vitamin B and caffeine are all proven to nourish fine hair follicles and help stimulate hair growth. And, with 11,000 five-star reviews, this popular set is a steal at 30% off. 

Save $11 with coupon
$24 at Amazon

A true game changer for fine, limp hair, Scottish brand Rusk makes one of the best thickening, texturizing sprays on the market — adding mega volume without heaviness or weight. 

$15 at Amazon

File this $4 shampoo brush under: things you don't think you need until you try them. One of the best and the first steps you can take if you want to stimulate hair growth is regular scalp massages. These brushes make 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 be helping to unclog pores on your scalp and improve circulation, the whole thing just feels good too.

$4 at Amazon

It seems like hooey but it's actually true: Topically-applied rosemary oil has been clinically proven to both initiate new hair growth and help prevent further hair loss. In fact, a 2015 study suggests that rosemary essential oil is as — if not more — effective as minoxidil at growing new hair in mice. This is an excellent rosemary oil should you want to try it out: Majestic Pure's formula is ethically sourced, cruelty-free, highly concentrated and, right now it's nearly 35% off.  

$10 at Amazon

The problem with fine, thin hair is it's hard to find moisturizing, de-frizzing products that won't make your strands look limp. Enter OGX's weightless dry oil spray which magically smooths flyways, mends split ends and eliminates that fuzzy summer hair look without looking greasy or heavy.

$9 at Amazon

This well-reviewed foam — or in old-school parlance, mousse — is airy and ultra-lightweight while boosting texture, volume and body. It's especially good for wavy or curly manes, but will add needed root volume to just about any kind of 'do. 

$20 at Amazon

I know, I know — it's not cheap, but this is hands-down the best leave-in conditioner I've ever used for fine or thinning hair — it's lightweight yet still ultra-moisturizing, it smells like the best expensive hotel in Italy and, at 34 ounces, the bottle-bag itself is huge, which means it will last forever (I've had mine for 6 months!).

$48 at Amazon