13 Best Hair Growth Products in 2025—We Tried Them All

Hair loss can be a frustrating side effect of stress, postpartum, aging, and many other factors—but the best hair-growth products are here to help. All sorts of buzzy solutions have hit the market recently —vitamins, thinning hair shampoos, eyelash serums, red light therapy devices—and figuring out which ones are actually worth the investment can be tricky. That’s why we spoke to dermatologists, trichologists, and hair stylists for recommendations—and did our own extensive testing on what’s out there.

Your ideal treatment will probably involve several of these products, experts say. “What you use depends on the cause of your hair loss, as well as the level of development,” says Hardik Doshi, MD, FACS, a board-certified plastic surgeon at hair-restoration clinic Ample. Anna Chacon, MD, suggests considering topical treatments and supplements that cater specifically toward the hair-growth cycle by slowing the rate of hair loss and stimulating new growth. You’ll also want to optimize your scalp’s overall health by reducing build-up, breakage, and flaking with hair-care products like scalp serums, hydrating hair oils, thickening shampoos and conditioners for thinning hair, and various tools that boost blood flow.

These are the products for thinning hair that stood out from the dozens we tried. If you’re unsure where to start, speak to a dermatologist to help you develop a routine.

Our top hair growth products, at a glance

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Best Hair-Growth Vitamin

Nutrafol Women Hair Growth Supplement

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Best Shampoo and Conditioner for Hair Growth

Vegamour Hydr-8 Hydrate and Repair Shampoo and Conditioner

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Best Serum for Hair Growth

Act + Acre Cold Pressed Stem Cell Scalp Serum

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Best Eyelash-Growth Serum

RevitaLash Advanced Eyelash Conditioner (3.5 ml)

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Best Serum for Hair Growth: Act + Acre Cold Pressed Stem Cell Scalp Serum

• What we love: Made with natural fortifying ingredients; vegan
• What’s worth considering: Not the best choice for already oily hair; pricey

Anna Chacon, MD, a board-certified dermatologist recommends massaging a bit of Act + Acre’s hair-growth serum onto your scalp before bed if you suffer from thinning, dryness, and flaking. Buildup can actually inhibit hair growth, she says, and detoxing with a product like this one can create a healthier environment for development of new follicles. This moisturizing serum is packed with ingredients like antibacterial aloe vera, nourishing hyaluronic acid, and stimulating bamboo extract that can support overall scalp health and strengthen your strands.

“I tried this scalp serum for the first time about two years ago when I was experiencing hair thinning around the crown of my head, and applied it at night every day for a few months. After that trial, I instantly saw hair growing in the applied area, and now I can’t go a night without it,” says Glamour commerce writer Alanna Martine Kilkeary. “It’s made such a huge difference in my hair health, and the application is easy to incorporate into any hair-care routine too, which experts say is very important.”

Best Hair Growth Oil: The Rootist Densifying & Thickening Serum for Thinning Hair

• What we love: Lightweight, helps thicken hair texture
• What’s worth considering: It is an oil, so a little goes a long way— if you use too much, it might make your strands a little greasy

If you’re looking to thicken hair at your roots and help prevent breakage, Rogerio Cavalcante, NYC-based hairstylist always recommends this treatment to his clients. “I love to use this formula on clients because it nourishes the scalp and roots to promote thicker, fuller, and healthier-looking hair and it minimizes signs of thinning. Not to mention I also love the smell,” he says.

Glamour’s Kilkeary is a fan, too, and shares that it’s one of the best hair oils she’s ever used because it’s lightweight, non-greasy and doesn’t weigh hair down. “I tested this product for a week and my hair simply drank it up. It’s ultra moisturizing and gives my hair a ton of body and volume without weighing it down in the slightest,” she says.

Best Drugstore Product for Hair Growth: Aveda Scalp Solutions Overnight Scalp Renewal Serum

• What we love: Overnight treatment makes it easy to incorporate into a routine
• What’s worth considering: A bit pricey for the size

If you deal with a dry scalp and hair loss, we love this hydrating overnight serum that will give you denser, more moisturized strands by morning. It’s formulated with hyaluronic acid, centella asiatica and probiotics to balance out the scalp and help banish inflammation, flakes and dryness.

“This serum has become one of my go-tos because it’s an overnight treatment, which makes it a no brainer to apply,” says Glamour’s Kilkeary. “It gently exfoliates and can be used all over the scalp to help get rid of flakes and replenish moisture, and I love how soft my hair feels after using it.”

Best Eyelash-Growth Serum: RevitaLash Advanced Eyelash Conditioner

• What we love: Rapidly grows new lashes; curling; long-lasting; doesn’t irritate sensitive eyes;
• What could improve: Pricey (though a little goes a long way); not pregnancy- or breastfeeding-safe

Meghan Markle swears by this eyelash serum, which contains prostaglandin analogues, a hormone that stimulates hair follicles to go into their growth phase. It also has a peptide complex that strengthens, softens, and even curls thinning lashes. Latisse is another popular lash serum that uses hormones, but it’s a bit pricier, and you need a prescription to get it.

“Every night, I swipe RevitaLash along my lash line before bed (kind of like eyeliner),” says Glamour commerce editor Malia Griggs. “I’ve done this for the last eight months now, and it is wild how much fuller and plentiful my lashes are now—they look fake! I get compliments on my lashes all the time now, and I love how much more awake my face looks, even without makeup on. I’m a huge fan of the value of this product; it took seven months of daily use for me to finally need a new tube. In a world where a lash lift requires a monthly spa stop and runs up a $100 bill without actually giving me new hair, there’s no question that this serum feels like a far better deal.”

Best Red Light Therapy Device for Hair Growth: Foreo FAQ 301 LED Hair Strengthening Scalp Massager

• What we love: Compact and cordless; waterproof; quick treatment time
• What’s worth considering: Using the included serum may make hair a bit greasy

If you’re looking to test out red light therapy for your scalp, we recommend this waterproof scalp massager that you can use in or out of the shower to help stimulate hair growth. It has T-sonic pulsations to boost circulation, plus red light to help promote thicker hair in sparse areas.

“I’d never tried a red-light tool on my scalp before, so I wasn’t sure what to expect,” says Glamour’s Kilkeary. “But I ended up really liking the experience. It has a powerful vibration that’s almost like a massage for your scalp. You can make it a little more or less intense as you please. The red light is super bright and feels warm upon contact,” she says, noting it was gentle enough not to irritate. “I haven’t noticed a huge difference yet, though my hair is a little bit thicker around my crown and I am seeing some new hair growth.”

Best Luxury Red Light Therapy Device for Hair Growth: CurrentBody LED Hair Growth Helmet

• What we love: Full scalp coverage; hands-free design
• What’s worth considering: Hard to store; expensive