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Top 16 Best Hair Serums for Hair Growth and Thickness 2024

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Top 16 Best Hair Serums for Hair Growth and Thickness 2024

Everyday, millions of men and women experience hair loss, in fact, we lose up to 80-100 hairs a day naturally, but if you're noticing extra fall than usual, it may be time to tweak your hair routine. If your hair is thin or you have balding spots on your scalp, hair growth serums can be beneficial in making your hair appear thicker and fuller. However, there are so many different serums on the market that finding the one that actually works can be daunting. So what are the benefits of using a hair serum? Do hair thickening serums really work? Can serums make your hair grow? Which serum helps to grow hair faster? Which hair serum is best? Read on and you can find the best hair growth products for thinning hair and hair loss.

Cover Photo:shop.keranique.com

What Can Hair Growth Serums Do?

Hair serums may provide some benefits. The best way to encourage healthy hair growth is by optimizing scalp conditions. A healthy and well-conditioned scalp can improve the quality of hair that follicles produce.

Hair Growth Serums help stimulate growth at the root by targeting the hair follicles. These products are formulated with potent ingredients that help to stimulate hair growth and extend the growing period of each strand of hair, which means less shedding. The best hair growth serums are based on clinically proven active ingredients for hair growth.

If hair serums contain ingredients that moisturize the scalp and increase blood flow to the scalp, they can significantly improve the condition of the scalp. So, a hair serum will not increase hair growth, but it may encourage producing follicles to grow thicker, shinier hair. In many cases, this can improve the appearance of the hairline and give the impression of a fuller head of hair.

Advantage and Disadvantage of Hair Growth Products

Pros	Cons
improved appearance of hair fullness improved strength and hair health can be a good alternative to stronger prescription medications	potential side effects, such as nausea, headaches, or weight gain not all hair products work for everyone, so you may end up spending a lot of money on a product with little impact prescription medications, such as Keeps, are often more effective, depending on the cause of your hair loss

How to Choose the Best Hair Serum?

Hair serums come in many different forms, so it is best to find products that will give you the results you want.

For Hair Growth

When you are looking for a no-fuss hair growth serum that gets right to business, Grow Perfect Hair Growth Serum is perfect for you.

For Dry, Damaged Strands

If you have dry hair that easily frizzes, or hair that is sensitive to UV rays, adding Sun Defense Hair Mist to your routine will help. If you use this nourishing mist together with a scalp serum, they can help grow hair that is strong, shiny, and healthy.

Where is the Best Place to Buy Hair Serum？

There isn’t a "best" place to buy hair serum from and at the time of writing there was good availability from US retailers.

The below shows some of the cheapest online stores and it’s always worth checking out eBay, too.

Walmart:up to 4% cashback
Best Buy:up to 0.5% cashback
Stylevana:up to 3% cashback
Sephora:up to 4% cashback
Walgreens:up to 4% cashback
Rite Aid:up to 4% cashback
Sally Beauty:up to 4% cashback
CVS:up to 3% cashback
Amazon:Cashback temporarily unavailable

Money Saving Tip: If you want to buy any hair dye online, Sign up at Extrabux first，(What is Extrabux?), then book through these websites, so you can enjoy up to 4% cashback from Extrabux! Sign-Up Bonus: Free to join it & get a $20 welcome bonus!

The 12 Best Hair Growth Serums 2024

1.Kérastase Initialiste Advanced Scalp and Hair Serum

Price: $56(60ml) @ Kerastase; $56(60ml) @ Sephora

Source:kerastase-usa.com

This scalp serum contains a blend of plant-based ingredients, like gluco-peptides and wheat protein, and it claims to transform your hair in 7 days. It’s designed to reduce breakage, add shine, soften, thicken, and strengthen hair.

According to Kérastase, the serum can dramatically reduce breakage due to brushing, so this option is best for people with brittle, weak hair.

Type: strengthening serum

Size:60ml

Product Benefits:Thickens Hair,Creates Strong Hair,Delivers Soft Hair

Key Ingredients:SP94 (an emulsion that strengthens hair); mineral oil and amodimethicone (conditioners); green tea extract (antioxidant)

Review:

Pros

Cons

A treatment product for your scalp.
Luxurious packaging.
Needs to be applied; post shampooing and

conditioning; to the scalp only.

The product spreads easily on the scalp.
It has a mild and nice spa-like fragrance to it.
It totally gets absorbed into the scalp
It does not impart any greasiness to the scalp.
It does not leave any whitish residue.
It really makes the scalp healthy.
It has decreased my slight itching and hair fall.

Very expensive.
Limited availability in India.
Bottle is heavy, made of glass.

2.Groh Stimulating Scalp Serum

Price: $50 @ Groh Hair ; $47.50 @ Amazon

Source:grohhair.com

The Groh scalp and hair thickening serum delivers the active ingredients needed to help promote healthy hair growth, re-balance dry and oily surfaces, soothe dryness and reduce itchiness and flakiness for increased hair growth.

This oil-free serum, created with the natural antioxidant Ergothioneine, whose unique transporter delivers this bio nutrient directly to skin cells, supports hair follicle health, important for stronger and more vibrant hair.

Type: Oil,Serum

Size: 2 Fl Oz (Pack of 1)

Recommended Uses For:Hair Loss,Thinning Hair,Hair Growth

Key Ingredients:Aloe Barbadensis Leaf Juice, Mushroom Extract Ergothioneine, Glycerin, Gingko Biloba Leaf Extract, Olea Europaea (Olive) Leaf Extract, Asphalathus Linearis (Rooibos) Leaf Extract,

Review:

Pros

Cons

Groh Hair products can stimulate hair regrowth.
They create healthier skin, hair, scalp, nails, lashes, and brows
Groh Hair vitamins can stimulate cellular health.
They may promote the health of the scalp.

It takes 3-6 weeks for results.
You may experience a rash or allergic reaction at the scalp.

3.Women's Rogaine 5% Minoxidil Foam for Hair Thinning and Loss

Price: $53.99/2.11oz x 2 pack@ Walgreens; $24.97/2.11 oz@ Walmart

Source:walgreens.com

Help treat hair loss and regrow fuller hair with Women's ROGAINE 5% Minoxidil Topical Foam. Ideal for use at the early stages of hair thinning, this fast-working hair regrowth treatment is specially formulated for women and is clinically proven to regrow more hair. This thinning hair foam penetrates the scalp to reactivate shrunken hair follicles, allowing for regrowth of hair. The 5% Minoxidil formula works to boost hair follicle activity and hair protein production, while Tricho-Prime Technology uses a proprietary combination of ingredients to create an optimal environment for hair regrowth.

The thinning hair treatment also contains botanical extracts and emollient to help maintain a healthy, conditioned scalp, plus alpha Hydroxy acid (AHA) to promote natural skin exfoliation to help keep follicles open. This hair growth treatment comes in a no-mess foam that is easy to use and is designed to fit easily into your daily beauty regimen with once-daily use.

Type: Foam

Size:Two 2.11 oz. cans

Product Benefits:ideal for use at the early stages of hair thinning

Key Ingredients:Minoxidil 5%

Review:

Pros	Cons
Contains finasteride and minoxidil, Two of the most effective hair growth topicals	The pump nozzle can be difficult to use.

4.Act + Acre Cold Processed Stem Cell Serum

Price: $86 @Bluemercury ; $86@ Dermstore

Source:bluemercury.com

A potent serum that maximises the skin’s regeneration on the scalp and boosts collagen production to restore hair quality throughout the natural ageing process.

This anti-aging complex harnesses the extraordinary self-rejuvenating power of plant stem cells and antioxidant-rich leaf extracts to reduce signs of hair thinning, dryness, and fallout. The antioxidant-rich formulation helps mitigate sun damage and pollution—key elements known to disrupt the scalp ecosystem. Both restorative and rejuvenating, this serum is proof that plants are, indeed, friends.

Type: Liquid

Size:2.2 oz | 65 ml

Recommended Uses For:Hair Loss,Hair Growth

Key Ingredients:

Review:

Pros	Cons
Easy-to-use dropper Absorbs easily Great smell Scalp-soothing blend of oils Adds body and thickness	Very pricey Three-step process is time-consuming Doesn't fully transform a dry scalp

5.Keranique Hair Regrowth Treatment for Women

Price:$28.99 @ CVS; $29 @ Keranique

Source:cvs.com

keranique is another treatment that contains FDA-approved minoxidil, clinically proven to treat female pattern baldness. It comes with a handy sprayer, so you can apply it topically to thinning areas on the scalp.

Keranique only has formulas with 2% minoxidil, which is less than some other brands. Still, it’s meant to be applied to the scalp twice daily.

Type: regrowth spray

Size:2 OZ

Recommended Uses For:Regrow hair,Thicker hair,Reactivate hair,FDA Approved

Key Ingredients:Water, Alcohol, Propylene Glycol, Minoxidil 2%

Review:

Pros	Cons
Keranique is the best all-in-one hair treatment solution for women Claims to be designed exclusively for women's unique body chemistry Readily available online or at retail outlets	The price is high It doesn't go a long way Used it for almost three months.

6.THE ORDINARY Multi-Peptide Serum for Hair Density

Price: $17.90 @ Sephora; $17.90 @ Ulta

Source:cvs.com

This hair-thickening serum from The Ordinary contains several unique ingredients that promote strand density. One is called Redensyl which targets stem cells in the scalp to improve overall hair density while Procapil increases blood flow in the scalp which allows hair to be more nourished and appear thicker.

The Ordinary is a fan favorite for low cost, effective beauty treatments. This product is a concentrated serum that’s designed to help hair look thicker, denser, fuller, and healthier. Designed for fine, medium, or thick hair, this vegan serum is also free of silicones, parabens, and alcohol.

Type: serum

Size:2 oz/ 60 mL

Recommended Uses For: Hair Thinning,Hair Loss,Straight, Wavy, Curly, and Coily Hair

Key Ingredients: Redensyl, Procapil, Baicapil

Review:

Pros	Cons
Ideal for people with dry or flaky scalp as it is great for greasing the hair. It prevents hair damage and nourishing it by facilitating blood flow. It provides luscious, thicker, denser hair. A great and affordable alternative that lasts longer. It is a cruelty-free, vegan product. It is free from several chemicals and is gluten-free, alcohol-free, but free, and silicone-free.	It is a leave-on serum, so you might want to avoid using it during the day immediately before important events.

7.Sunday Riley Clean Rinse Clarifying Scalp Serum

Price:$48 @ Dermstore ； $48 @ Sephora

Source:dermstore.com

This is an AHA/BHA-infused serum that cleanses the scalp of product buildup, excess oil, dead skin, and pollution for a healthier-looking scalp and refreshed hair.

Keep your scalp healthy at all times by clarifying debris and replenishing moisture with Clean Rinse Clarifying Scalp Serum by Sunday Riley. This rinse-off serum, with its glycolic acid formula, exfoliates the surface of the scalp while salicylic acid dissolves oil buildup inside of the follicle to enhance healthier hair. This clarifying scalp serum is in a gentle, micellar water base, to lift away dirt as it rinses out of your hair.

Type: cleansing serum

Size: 4 oz/ 120 mL

Recommended Uses For: healthy hair growth and clarify the scalp

Key Ingredients:Glycolic Acid,Salicylic Acid,Niacinamide,Rose Clay and Jasmine Essential Oil

Review:

Pros	Cons
Exfoliates the surface of the scalp Clarifies product residue from the hair Dissolves oily buildup Promotes healthy hair growth It really decreases the itchiness and gunk build up	The product is expensive for the size of the bottle

8.Kiehl's Magic Elixir Scalp and Hair Oil Treatment

Price:$15.40 @ Kiehls; $31.95 / Fl Oz @ Amazon

Source:dermstore.com

This lightweight scalp and hair oil treatment is infused with Avocado Oil and Rosemary Oil for hair to immediately help the scalp & hair feel moisturized, improve hair’s manageability and provide natural shine. This pre-shampoo treatment for all hair types promotes a healthy scalp environment, leaving hair looking and feeling healthier.

This treatment also helps immediately improve hair's manageability while providing natural shine, too. Extracted from the leaf of the rosemary plant, rosemary leaf oil contains amino acids, caffaic acid, rosemary acid and apigenen.

Type: oil treatment

Size: 4.2 fl oz.

Recommended Uses For: All hair types

Key Ingredients:Avocado oil, safflower seed oil, rosmarinus officinalis leaf oil

Review:

Pros	Cons
It's a 2-in-1 scalp and hair treatment. Fulfate-free; synthetic fragrance–free; mineral oil-free; artificial dye–free Promotes a healthy scalp environment, leaving both scalp and hair feeling healthier Immediately leaves scalp and hair feeling moisturized Softens hair and provides natural shine	It's not a leave-in product, so you'll have to rinse it.

9.OUAI Thick & Full Supplements

Price:$42 @ Sephora; $42 @ Amazon

Source:sephora.com

OUAI is famous for its celebrity-endorsed hair care products, but the company offers hair-supporting supplements as well.These supplements are gender inclusive and are meant for anyone experiencing thinning hair or anyone hoping to thicken and strengthen their hair. You simply need to take one pill per day with food and Ouai says that you can expect to start seeing the results in 90 days.

Featuring biotin and pea sprout, these ingredients are intended to reduce hair shedding and strengthen your hair for a fuller and thicker appearance. Also, like all OUAI products, these supplements are free of gluten, parabens, phthalates, sodium laurel sulfate (SLS), and sodium laureth sulfate (SLES).

Type: daily supplement

Size: 30 capsules

Recommended Uses For:Hair Growth,Hair Thinning

Key Ingredients:Vegan, Refill Available, All Hair Types, Good for: Hair Thinning, Cruelty-Free

Review:

Pros	Cons
Smells heavenly Cleanses well without stripping Lathers luxuriously Washes off easily Excellent results A little goes a long way (so a bottle will last longer than you’d expect)	Some reviewers say it feels sticky

10.Hair Thickness Maximizer Organic Saw Palmetto Oil Serum

Price: $15.15 @ Amazon; $32.85 @ Walmart

Source:amazon.com

ANTI HAIR LOSS PROPRIETARY BLEND - Enhanced with Saw Palmetto, Pumpkin seed oil, Moringa oil, Baobab oil, Blackberry seed oil, Flaxseed oil, Rosemary essential oil, Peppermint essential oil, Cedarwood essential oil, Oregano essential oil.

Extracted from plants without the use of solvents or high heat in order to maintain the highest potency and efficacy.

Type:Oil,Serum,Spray

Size:1 Fl Oz (Pack of 1)

Recommended Uses For:Hair Thickness，Hair Loss

Key Ingredients:Saw Palmetto, Pumpkin Seed Oil, Moringa Oil, Baobab Oil, Blackberry Seed Oil, Flaxseed Oil, Rosemary Essential Oil, Peppermint Essential Oil, Cedarwood Essential Oil, Oregano Essential Oil

Review:

Pros	Cons
Studies have proven it significantly improves hair regrowth and thickness. Repair And Regenerate Without Harsh Ingredients. Hair Thickness Maximizer uses Only Natural ingredients that stimulate & nourish hair follicles & scalp.	It takes time and patience.

11.Viviscal Hair Growth Supplement

Price: $36 @ Viviscal; $33.99 @ Walgreens

Source:walgreens.com

Viviscal is another supplement formulated for healthy hair growth that contains a blend of vitamins and minerals including biotin, zinc, vitamin C and other herbs.

Viviscal vitamins are designed to improve the appearance and thickness of hair, especially hair that’s prone to excessive shedding or breakage. The ingredients target protection as well as stimulation of new growth.

Type: daily supplement

Size: 60 Count

Recommended Uses For:Hair Thickness，Hair Loss

Key Ingredients:biotin and vitamin C

Review:

Pros	Cons
100% drug free Contains some ingredients of natural origins Nourishes thinning hair and promotes existing hair growth from within Surgery-free, easy-to-use solution for hair growth* Scientifically proven to improve hair thickness and reduce shedding within 3-6 months++	Potential allergic reactions in those allergic to fish or shellfish Relatively high cost Takes some time for best results

12.Aveda Botanical Repair Strengthening Overnight Serum

Price: $52 @ Aveda; $46.96 @ Walmart

Source:aveda.com

Your hair bonds can become broken over time—by heat styling, chemical processing, and other physical stressors (harsh brushing, too-tight hairstyles, and the like), which is where protein-rich repairing serums come into play: These help reconstruct those bonds, thus leading to stronger, smoother, and more defined strands.

Aveda's strengthening serum contains proprietary bond-building plant molecules, along with organic avocado, green tea, and sacha inchi, and Nangai oils to deeply moisturize and further protect the strands.

Type: daily supplement

Size:3.4 fl oz/100ml

Recommended Uses For:Hair Thinning,Hair Loss

Key Ingredients:Proprietary blend of certified organic avocado, green tea and sacha inchi oils smooths the cuticle to detangle and prevent breakage.

Review:

Pros	Cons
Big size Good for scalp and split ends	Can weigh down fine hair

13.Bondi Boost Procapil Hair Tonic

Price: $21.99 @ Sephora; $21.99 @ Ulta

Source:aveda.com

A patented, vegan tonic with a blend of ingredients that strengthens at the root and fights against hair loss and thinning.

The BondiBoost Procapil Hair Tonic is a high performance, results-driven 'leave-in-hair' formulation that contains the all-natural and patented ingredient Procapil, the latest technology to boost your roots and help you reach your hair goals. Anti-hair loss for all hair types.

Type: spray-in treatment

Size:4.24 oz

Recommended Uses For:Hair Thinning

Key Ingredients:procapil and horsetail leaf extract

Review:

Pros	Cons
Bondi Boost offers several products that promote hair growth. One of the best options is the Procapil Hair Tonic. Reduce hair loss while leaving your hair healthy and thic	Less clinical backing, scented

14.PURA D'OR Hair Thinning Therapy Energizing Scalp Serum Revitalizer

Price: $17.19 @ Amazon; $17.17 @ Walmart

Source:walmart.com

PURA D'OR Hair Thinning Therapy Energizing Scalp Serum is an after-shower care product from our Blue Line. It soothes dry, itchy scalp and energizes hair for added benefits. It contains 15 exclusive key active ingredients that help the serum to penetrate deep into your scalp to stimulate hair follicles and improve the strength of the roots while increasing hair thickness.

This hair serum is made to keep your hair moisturized and hydrated so it is more manageable and lustrous while protecting your hair from harsh rays of the sun, humidity, and other external factors that can cause harm to your hair. PURA D'OR scalp treatments is made with selected natural ingredients, free from sulfates (SLS), parabens, silicones, and other harsh chemicals.

Type: Scalp Treatment

Size:4oz

Recommended Uses For:Hair Thinning,Hair Loss

Key Ingredients:Coffee extract, biotin, DHT blockers

Review:

Pros	Cons
Contains finasteride and minoxidil Two of the most effective hair growth topicals Clinically tested formula with many great benefits	The pump nozzle can be difficult to use.

15.OLAPLEX No. 0 Intensive Bond Building Hair Treatment

Price: $30 @ Amazon; $28.50 @ Sephora

Source:amazon.com

This celeb favorite bond-building treatment is all the rage on TikTok.According to the company’s trials, the OLAPLEX intensive hair treatment can make hair three times stronger in just one use.

Their formula contains the patented ingredient bis-aminopropyl diglycol dimaleate, known as a β-unsaturated Michael acceptor. It’s sulfate-free, paraben-free, phthalate-free, color safe, vegan, and cruelty-free.

Type: bond-building spray

Size: 5.2 Fl Oz

Recommended Uses For:Damaged Hair,Hair Thinning,Hair Loss

Key Ingredients:bis-aminopropyl diglycol dimaleate and sodium benzoate

Review:

Pros	Cons
Primes hair to intensify benefits of No. 3 Hair Perfector (sold separately). Strengthens weakened bonds deep within the hair strand. Repairs hair from chemical, thermal, mechanical, and environmental damage.	The packaging isn’t ideal, the single stream sprayer doesn’t distribute product evenly, The small bottle size means they have to repurchase often.

16.Vegamour GRO Hair Serum

Price: $58 @ Vegamour; $58 @ Sephora

Source:sephora.com

There are many issues that can contribute to hair thinning or fallout (stress, lack of sleep, vitamin deficiencies, hormonal changes, increased DHT and miRNA22 levels, impaired microcirculation and poor scalp health). Frequently, it's a combination of two or more of these issues. That’s why a holistic, 360º approach to hair wellness is the most effective way to promote sustainable hair health.

The plant-based, multi-tasking GRO Hair Serum uses a combination of clinically-tested, vegan phyto-actives that work in tandem to help support a healthy and balanced follicular ecosystem while soothing the scalp and revitalizing hair roots. Free of toxic chemicals, carcinogens or harmful side effects, this cruelty-free, vegan hair serum is formulated with powerful phyto-actives shown in multiple clinical studies to increase the appearance of hair density while reducing signs of shedding to bring you thicker, fuller looking hair

Type: strengthening serum

Size:1 fl oz.

Recommended Uses For: Reduces signs of hair thinning for thicker, fuller, longer looking hair

Key Ingredients: Caffeine, Curcuma Longa (Turmeric) Callus Conditioned Media

Review:

Pros	Cons
Get fuller, thicker, healthier hair 100% plant-based vegan ingredients High bioavailability in every product Clinically tested for quality and effectiveness Unique ingredient profiles Excellent customer reviews	The 1-ounce bottle may not be enough for 30 days of use. Pricing is on the high end Hair serum can be problematic for oily hair

How to Use Hair Growth Products?

Next, we will take you through how to use a scalp serum for hair growth.

Start with either damp or dry hair. Either is fine, as long as your scalp is clean!
Shake the product well, examine your areas of concern, and be ready to apply some serum.
If you have never used a scalp serum before, begin by sectioning your hair off, making sure you get right to the scalp and not just hair. You need to get right into those follicles
As you drop a bit of the product down, be sure to gently massage it in. You want to make sure the product isn’t dripping down your scalp. A couple of drops is enough
Once you have covered your areas of concern, you’re done! This is a leave-in treatment and should not be washed out. Do not wash your hair or scalp after treatment.
Repeat daily for the best results.

Keep in mind that the formula is very concentrated, so a few drops will go a long way. If you are experiencing greasy hair after use, you are probably using way too much product.

FAQs

1.How long does it take for hair growth products to start working?

Hair growth products don’t work instantaneously. Most products will start to work within a few months.

2.How often do I use hair growth products?

Each product has different directions, but many are formulated for application once or twice daily. Some of our experts found leave-in products preferable, so keep an eye out for once-daily products that you can apply at night or leave on during the day.

3.Which serum is best for hair growth?

The best serum for hair growth heavily depends on your needs. However some of our top picks include Vegamour, Ravanat, Nutrafol, and more.

4.What is the number 1 hair growth product?

Both serums and shampoos are some of the most popular formulas for encouraging longer, fuller strands.

5.Are serums or supplements better for hair growth?

While serums work from the outside-in, supplements work from the inside-out. Ideally, you’ll be able to use both types of products at once for optimal results.

6.Do expensive hair growth products work?

A product’s effectiveness really depends on the brand and its ingredients and a more expensive product doesn’t automatically mean that it is more effective.

Factors like the cost of ingredients, the perceived popularity or luxury of the brand name. Not only that, but the product’s target audience can increase or decrease the price completely independent of how effective it actually is.

7.Which oil makes your hair grow faster?

Some of the most popular oils for encouraging hair growth include rosemary, castor, argan and moringa oil, all of which keep strands healthy through added hydration or a boost of antioxidants to fight UV rays and pollutants.