The 17 Best Hair Growth Shampoos

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Do you ever feel like your hair just refuses to grow longer, no matter what supplements you take or products you try? You’re not alone. Countless factors can impact the growth and length of hair, from your genes to your scalp’s health and even your daily routine. If you’ve already consulted a dermatologist and made hair-health tweaks to your diet, then a hair growth shampoo might just be the answer.

Hair growth shampoos are formulated with a blend of nourishing ingredients to restore your hair’s natural ability to grow new, healthy strands. “Hair growth shampoos work by delivering ingredients to the scalp that stimulate the hair follicles, and/or extend the active phase of the hair growth cycle—the anagen phase—to increase hair growth,” explains board-certified dermatologist Dendy Engelman.

Whether you’re dealing with thinning hair, heat damage, or simply want your hair to grow past your shoulders, investing in a high-quality hair growth shampoo can make all the difference. Here are 17 of our favorites, plus expert tips from Engelman and board-certified dermatologist Jessie Cheung.

Gro Revitalizing Shampoo

The secret to this shampoo’s effectiveness? An ingredient list that reads like a nourishing smoothie: marula, baobab, and murumuru butter for hydration and nourishment, and red clover and mung bean to help prevent key hair-loss causes like IGF1 and BMP4.

Customer review: “After three weeks of using this with the conditioner and serum, I’m noticing great results — less shedding, many baby hairs, and my hair feels great.” —Emerock

Unbreakable Care Shampoo, Conditioner, and Leave-In Spray

This hair-fortifying system is powered by micro-thickening technology, which creates weightless bonds between hair strands to boost fullness right away. Ingredients like keratin, biotin, and amino acids help your hair grow longer and fuller with each shampoo.

Customer review: “I was a little hesitant to try it because I usually use cheaper shampoo/conditioner but this stuff works. The first use I actually noticed a difference. Less breakage/shedding, smoother hair, less tangles.”

Root Purifier Scalp Shampoo

With ingredients like vegan protein to restore essential nutrients and moisture, prebiotics to fortify the scalp barrier by nourishing the microbiome, and a biosurfactant to provide a thorough cleanse without stripping the hair and scalp, you’re in good hands with Nutrafol’s shampoo.

Customer review: “My hair started thinning after I had a baby. After a few weeks of use I feel my hair is much better looking, it has volume and shine. Definitely recommend.” —Valber11

Anti-Hair Fall Shampoo

Not only does this shampoo reduce hair breakage and hair fall, but it also protects the hair and scalp from UV stress, pollution, and heat.

Customer review: “I’ve noticed that I don’t lose that much hair since I’ve started using this shampoo. It hydrates my hair and makes it feels fuller. I’m definitely going to stick with this brand for a long time.” —Tabita

The Shampoo

While the name may be simple, the formulation is anything but. Fueled by Augustinus Bader’s patented TFC8 technology, the shampoo is enriched with powerful plant-based extracts and calming vitamin B₅ to support natural hair growth.

Customer review: “This completely stops shedding! I have never seen such a visible difference from a Shampoo before. After just half a bottle of usage I noticed my hair having so much more volume, feels thicker, less frizzy, more hydrated, and my split ends are nonexistent.” —JRG583

Flourish Shampoo

This shampoo from Virtual labs is powered by not one, but two keratin proteins that nourish, strengthen, and promote hair growth.

Customer review: “After using this for a couple months, I noticed that those wispy short hairs I’m always battling against frizz have actually had a chance to grow! Good bye halo frizz and hello fuller looking and feeling hair!” —Mcmoovin

Hair Alchemy Resilience Shampoo

We can’t rave enough about this shampoo from one of our favorite haircare brands, Oribe, which has been shown to deliver hair that is 133 percent stronger and 2.9 times more elastic after five uses. Plus, the bottle is just too pretty.

Customer review: “I’m really impressed by this shampoo. It smells so good, like I’m leaving a high end spa. A little goes a long way and leaves my hair feeling nice and clean and film free after.” —Iliani

Fullness Shampoo

Work this silk-protein-powered shampoo into your scalp for a minute or two, and you’ll see fuller hair right out of the shower, followed by healthier hair growth after just a few weeks.

Customer review: “I have thin hair and have most my life. This shampoo helped me and did not weight down my hair I liked the scent of it and it lathered up well also. So overall it was a big hit.” —blueeyeleo

Densifique Bain Densité Shampoo

If we were drafting a fantasy league with the most hydrated players in the game, hyaluronic acid and ceramides would be our top picks. This shampoo is formulated with both, to visibly thicken and strengthen thin hair, beginning at the root.

Customer review: “This really makes my hair seem a little fuller. I have plenty of hair but it’s a fine texture and can be easily flattened by weather & products. This shampoo has really improved the fullness and the style lasts longer-looks good on day 2. Lathers great & smells divine.” —Clairesnana

System 2 Cleanser Shampoo

This clarifying shampoo removes product buildup, pollutants, and toxins, leaving your hair growing healthy and strong. With Nioxin’s top-of-the-line formulations and ingredients, it’s no wonder the brand has stood the test of time.

Customer review: “I started using this product a year ago and it has made my very thin hair fuller and thicker. I had no hairline and now I do by using this product.” —Althia

Regenerative Veda Bond Repair Shampoo

Ayurvedic ingredients like ashwagandha and amla might be just what your hair needs. This shampoo also contains the clinically tested Veda Bond Complex, which provides an impressive 43 percent bond-strengthening repair with each use.

Customer review: “Whether used after an oil treatment or just a typical wash, this formula has everything I look for in a shampoo. My scalp and hair feel refreshed and nourished with lasting results. Surprise bonus- even my face framing grey hairs appear lustrous after use.” —AngelaCrystal

Fructis Grow Strong Shampoo

Nearly 10,000 Amazon reviewers swear by this $9 shampoo for noticeable improvements in the strength and overall health of their hair after using it.

Customer review: “My hair smells good for DAYS when I wash it with this and it’s been so soft and shiny since I’ve been using it. It’s usually dry, coarse, and frizzy no matter what I use so that’s saying a lot. I swear it’s grown like an inch in the past month since I started using it too. I can’t recommend this enough!!!” —Tiffany

Hair Density Shampoo

This density shampoo from Revita anchors your hair follicles by fortifying their structure and promoting regrowth, all while enhancing the quality of your hair.

Customer review: “I was skeptical about this product but it’s definitely added thickness to my hair. Just reordered.” —KrisStephens

HG Shampoo

This growth shampoo gently removes buildup and nourishes hair with ingredients like rosemary and aloe vera, leaving it stronger and more conditioned.

Customer review: “So great for thinning hair. Smells good and leaves my hair super shiny.” —BrookeCobb

Extreme Length Shampoo

Extreme is right! Thousands of rave reviews on Amazon and our editors agree: This biotin-infused shampoo works wonders to prevent breakage and help hair grow longer and stronger.

Customer review: “Before using this shampoo my hair was short and breaking and seemed to never gain any length but after using this my hair has gotten so long!” —Jenna

Perfect Repair Shampoo & Conditioner

Engelman loves this shampoo for those who have scalp damage and are looking to repair and stimulate new hair growth. “This shampoo combines keratin, argan oil, prickly pear oil, and bamboo plant stem cells to defend against environmental damage, extend the anagen (active) phase of the hair growth cycle and moisturize for stronger, healthier hair,” she says.

Customer review: “I aways have a hard time finding a repair type shampoo that doesn’t weigh down my hair…FOUND IT! It’s so good!! My hair feels and looks better every time I use!” —B8

Peptide Prep Shampoo

K18 is currently trending on TikTok, and it’s no surprise why—the brand’s bond-building products revive lifeless, damaged hair. This shampoo has an optimized pH that promotes scalp health, leading to hair growth with regular use.

Customer review: “I have been searching for a shampoo that my hair doesn’t hate for years. Finally, I can end the search. This shampoo has made my hair healthy, soft, and has helped with frizz! Highly highly recommend.” —Hamraz

Apple Cider Vinegar Hair Rinse

Though not technically a shampoo, this one can be used as a replacement, which Engelman recommends for people who wash their hair often. “Apple cider vinegar helps balance pH levels and sebum production, softens the skin of the scalp, and mitigates flaking. It also has anti-inflammatory and acetic properties, which help hair grow out more easily,” she says.

Customer review: “I am very impressed! I wash my hair daily due to workouts and love that I can do this every other day to put off the shampoo wash! Already bought more! My hair feels so soft and refreshed.” —Lacy

How do hair growth shampoos work?

“Hair growth shampoos support hair’s metabolism by stimulating blood flow and delivering nutrients, blocking androgens, and keeping the scalp healthy with antioxidants and anti-inflammatories,” says board-certified dermatologist Jessie Cheung.

How long does it take to see results with hair growth shampoos?

“You need to wait at least six weeks, or the average length of a hair cycle on the scalp, to see any meaningful effects,” Cheung says.

What ingredients should you look for in a hair growth shampoo?

Engelman recommends looking for ingredients in the shampoo that support both the hair cuticle and the hair follicle. “Biotin, caffeine, niacin (vitamin B-3), zinc, and peppermint are all excellent ingredients for healthy hair growth, as they promote blood flow to the scalp and deliver nutrients to the follicle, addressing the two key factors for strong, healthy hair and growth,” the derm says.

She also recommends looking for conditioning ingredients like argan oil, jojoba oil, and glycerin: “While they won’t directly stimulate new growth, they will help keep your hair healthy and strong.”

Meet the Experts

• Dendy Engelman is a board-certified dermatologist in New York City.

• Jessie Cheung is a board-certified dermatologist in New York and Chicago.

Why trust Harper’s Bazaar?

For more than 150 years, Harper’s Bazaar has been the preeminent fashion and beauty resource for women at every age. We cover what’s new and what’s next in beauty by working with the world’s leading authorities in dermatology, plastic surgery, cosmetics, skincare, haircare, and fragrance. Every story we publish has been thoroughly researched and vetted by our team of beauty editors and industry experts.

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