Expert-approved hair-thickening products, from shampoos to serums and more

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Vivian Le / TODAY

Although we can’t change our natural hair texture, there are many hair thickening products that can help revive flat and lifeless locks. These products can give your hair a fuller appearance, whether it’s naturally fine or thinning due to aging or stress.

Hair-thickening solutions come in various forms, such as serums, styling sprays, mousses, fibers and even dietary supplements. Each product has its unique method of action; some work by coating each hair strand to create the appearance of thickness or by nourishing the scalp to encourage healthier hair growth. Others even contain ingredients that temporarily plump up the hair shaft, giving you instant volume that lasts until your next wash.

With numerous product options available, however, choosing the right product can be challenging. To help, we’ve consulted a range of hair care experts, from stylists to dermatologists, to uncover the best hair thickening products and their optimal use for maximum impact.

What is a hair-thickening product?

You might already know about volumizing products like creams, sprays and shampoos, but celebrity hairstylist Mia Santiago points out that thickening products have a different role.

“Volumizing products are all about lifting your hair and adding body, while thickening products are designed to make your hair appear fuller and thicker,” she explains. "These thickening products work by coating each strand of hair, which increases its diameter and creates a plumper look.”

A quick online search reveals a variety of thickening options available. However, Santiago stresses the importance of choosing the right product based on your unique hair type and the look you want to achieve.

The best hair thickening-products, according to experts

For the fibers: Toppik Hair Building Fibers

Toppik Hair Building Fibers

AMAZON

• Toppik Hair Building Fibers $17.76 at Amazon
• Toppik Hair Building Fibers $24.95 at Ulta

Product Specs

Size: 0.42 oz. (standard) | Hair Type: All types and textures | Key Ingredients: Natural keratin fibers, silica and ammonium chloride | Type: Topical powder | Application: Bottle | Scent: Fragrance- Free

Topical fibers are another hair thickening product you can use to make your hair look thicker. One notable product you can easily find on Amazon is Toppik Hair Building Fibers, which are highly recommended by Brimhall. She appreciates this product not only because it’s free of fragrances but also due to its adaptability; it suits all hair types and textures while effectively concealing bald spots and thinning areas.

Brimhall notes, “Toppik fibers cling to your existing hair strands, giving the illusion of fuller hair and helping with issues like bald patches and visible scalp.” The product contains natural keratin fibers that seamlessly blend with your hair and comes in various shades to ensure a perfect match. Additionally, it offers a realistic look that lasts up to 24 hours without any added fragrance that could irritate sensitive scalps.”

However, it’s important to mention that the bottle does not come with an applicator. Some users have found the application process to be somewhat messy.

Fan favorite: Color Wow Raise the Root Hair Thickening Spray

Color Wow Raise the Root Thicken + Lift Spray

• Color Wow Raise the Root Thicken + Lift Spray $24.00 at Amazon
• Color Wow Raise the Root Thicken + Lift Spray $24.00 at Ulta
• Color Wow Raise the Root Thicken + Lift Spray $24.00 at Sephora

Product Specs

Size: 1.7 oz. (mini), 5 oz. (standard) | Hair Type: Straight, wavy, curly, and coily | Key Ingredients: Three lightweight elastomers, hydrolyzed keratin and panthenol | Type: Hair spray | Application: Spray-on | Scent: Yes

Looking for another spray option to help pump up your hair’s thickness? You’re in luck. Angela Calisti, a renowned hair expert and celebrity stylist, suggests trying this hair spray by Color Wow. She notes that it is “fantastic for creating lift and volume; it’s light and doesn’t make your hair feel sticky.”

This spray serves another purpose, too: It protects against heat damage while offering excellent hold to keep your hairstyle looking great throughout the day. It’s safe for all hair types — be it straight, wavy, curly, or coily — and contains a special formula designed to boost volume, strengthen strands, and reduce breakage.

One important thing to remember is that using too much of this spray can lead to heavy-feeling hair. Therefore, it’s best to apply it in moderation.

Thickening mousse: Amika Plus Size Mousse Perfect Body Mousse

Amika Plus Size Volume and Body Mousse

AMAZON

• Amika Plus Size Volume and Body Mousse $30.00 at Amazon
• Amika Plus Size Volume and Body Mousse $30.00 at Sephora
• Amika Plus Size Volume and Body Mousse $30.00 at Amika

Product Specs

Size: 8.5 oz. (standard) | Hair Type: Fine, medium and thick | Key Ingredients: Sea buckthorn berry, dimethicone, propylene glycol and VP/acrylates/lauryl methacrylate copolymer | Type: Mousse | Application: Nozzle dispenses product | Scent: Yes

If you want to experiment with a thickening mousse, Calisti suggests adding this amika product to your cart.

“This mousse is perfect for creating full-bodied, voluminous styles while keeping hair soft and manageable,” she explains. “It contains ingredients that not only offer flexible hold but also nourish, hydrate and shield the hair from heat damage. It’s also vegan, cruelty-free and free from harsh chemicals like sulfates, parabens and artificial colors.”

For those new to mousse, remember that a small amount goes a long way—start with a small dollop and adjust as necessary. “Using too much product can lead to buildup, making your hair feel heavy or greasy,” warns Calisti.

Splurge-worthy spray: Oribe Maximista Hair Thickening Spray

Oribe Maximista Thickening Spray

AMAZON

• Oribe Maximista Thickening Spray $42.00 at Amazon
• Oribe Maximista Thickening Spray $42.00 at Sephora
• Oribe Maximista Thickening Spray $42.00 at Oribe

Product Specs

Size: 1.7 oz. (mini), 6.8 oz. (standard) | Hair Type: Fine, medium and thick | Key Ingredients: Thickening copolymers, amino acids and Oribe Signature Complex | Type: Hair spray | Application: Spray-on | Scent: Yes

If you’re in search of a hairspray that adds thickness with each spritz, look no further than Johnson’s top pick from Oribe. This user-friendly spray works well for fine, medium, and thick hair types, and can be applied before blow drying to enhance fullness.

“It creates a bit of volume and density while also acting as a heat protectant,” she explains. “I like to spray it on the crown of my head where I want the most lift before using a round brush to dry my shorter layers.”

What sets this hairspray apart are its beneficial ingredients. The thickening copolymers enhance volume and provide a strong hold, while amino acids help strengthen the hair and reduce breakage. Additionally, it provides protection from UV rays. Just keep in mind that this product is scented; some may find the fragrance too intense if they prefer unscented options.

Splurge-worthy serum: The Rootist Densifying and Thickening Serum

The Rootist Densifying & Thickening Serum

AMAZON

Product Specs

Size: 1 oz. (standard) | Hair Type: Fine, medium and thick | Key Ingredients: Patent-Pending Rootbiomic Ferment™, densifying peptides and stem cells from turmeric extract | Type: Serum | Application: Marked dropper | Scent: Yes

For those interested in giving a hair thickening serum a try, Santiago highly recommends this product from The Rootist. With continued use, she claims this serum effectively boosts hair thickness and encourages new growth.

“I’ve seen that applying this serum on my clients’ thinning spots makes their part lines and hairlines look much fuller,” she shares. “Selecting a long-term solution is vital for developing thicker, denser hair from the outset.”

However, it’s important for users to remember that consistent application is key to seeing the best results. Many user reviews suggest using it for a period of 90 to 120 days before expecting noticeable improvements.

The best hair-thickening products, according to editors

Multifunctional Mask: NatureLab Tokyo Perfect Volume Thickening and Conditioning Hair Masque

Perfect Volume Thickening & Conditioning Hair Masque

AMAZON

• Perfect Volume Thickening & Conditioning Hair Masque $19.00 at Amazon
• Perfect Volume Thickening & Conditioning Hair Masque $21.00 at Ulta

Product Specs

Size: 6.7 oz. | Hair Type: All | Key ingredients: Plant-based ingredient list | Type: Mask | Application: Jar | Scent: Yes

Associate editor Shannon Garlin loves this mask because of its volumizing abilities, helping her hair achieve the perfect at-home blowout look.

Courtesy Shannon Garlin

It's hassle-free to use, she says, further noting that it soothes both her hair and scalp.

For a "fuller" hairline: The Ordinary Multi-Peptide Serum for Hair Density

Multi-Peptide Serum for Hair Density - 2 fl oz

The Ordinary Multi-Peptide Serum for Hair Density - 2 fl oz

• Multi-Peptide Serum for Hair Density - 2 fl oz $22.80 at Target
• Multi-Peptide Serum for Hair Density - 2 fl oz $22.80 at Sephora
• Multi-Peptide Serum for Hair Density - 2 fl oz $22.80 at The Ordinary

Product Specs

Size: 2 oz. | Hair Type: All | Key ingredients: Caffeine | Type: Serum | Application: Dropper | Scent: Yes

"I still feel like the consistent use of this serum has started to repair my many years of hair abuse," she says. "My hairline looks fuller and there’s new growth starting to appear. I even have family and friends commenting on how long my locks have gotten. Overall, I feel like my entire head of hair looks and, most importantly, feels healthier."

Courtesy Shannon Garlin

For nourishment and volume: Dr. Groot Hair Thickening Shampoo

Hair Thickening Shampoo

AMAZON

Product Specs

Size: 13 oz. (standard) | Hair Type: Thin, dry | Key ingredients: Biotin, prebiotics, rosemary oil and caffeine | Type: Shampoo | Application: Bottle | Scent: Yes

Garlin says, "This thickening shampoo provides so much nourishment and volume; I'm in love with the whole system. It has all the key ingredients for thicker hair, too, including rosemary and caffeine. My hair feels so soft and lush after each use."

"Wonderful" scent: Aveda invati ultra advanced exfoliating shampoo

invati ultra advanced exfoliating shampoo

• invati ultra advanced exfoliating shampoo $39.00 at Aveda
• invati ultra advanced exfoliating shampoo $34.00 at QVC

Product Specs

Size: 6.7 oz. (medium) | Hair Type: Medium, thick | Key ingredients: Wintergreen-derived salicylic acid, caffeine, glycerin and ginseng root extract | Type: Shampoo | Application: Bottle | Scent: Yes

Amanda Fama, an editor at Shop TODAY, recommends this hair-thickening shampoo from Aveda. She says, "I'm a big fan of Aveda products, including the brand's hair-thickening line. As I get older, I noticed my hair isn't as thick as it's always been, and this shampoo definitely makes a difference. It also leaves my hair feeling seriously smooth."

Different types of hair-thickening products

There are numerous types of hair-thickening products, each uniquely crafted to improve different features of hair volume and thickness. Here’s a simple guide to the most common options on the market and how they work to benefit your hair.

Shampoos and conditioners

Just as different shampoos and conditioners are designed to address specific issues like dryness or dandruff, there are also special products that focus on enhancing your hair’s thickness. When you use thickening shampoos and conditioners regularly, they strengthen and plump your hair strands. Most formulas also contain moisturizing ingredients along with a blend of proteins, vitamins, and minerals that support overall healthy hair growth.

Serums and treatments

Hair thickening products aren’t just limited to shampoos and conditioners; they also come in the form of serums and treatments. Typically used post-wash, these products are applied on the scalp and are designed for long-term use to help your locks grow thicker and fuller. Many of the serums contain beneficial ingredients such as peptides and biotin. Additionally, there are some treatments that incorporate FDA-approved components, such as Minoxidil.

Styling products

Certain styling products can also help create the appearance of thicker hair. Some popular options you’ll encounter include thickening sprays, mousses and foams, which add volume and fullness to the hair. There are also fiber-building products which are applied directly to the scalp and stick to existing hair fibers, giving a natural-looking fullness that can quickly enhance areas where hair may be thinning.

Who needs hair-thickening products?

Jae Manuel Cardenas, a senior stylist at the Sally Hershberger NoMad salon in New York City, recommends that individuals with fine hair or those experiencing hair loss should definitely try thickening products. However, he also cautions that these products may not be suitable for everyone.

“Interestingly, some people might not benefit from hair-thickening products,” he explains. “This group includes those with oily hair or anyone dealing with scalp conditions like eczema and psoriasis. Furthermore, people who already have thick or damaged hair should steer clear of these products and instead look for nourishing alternatives.”

If you’re unsure about whether to use hair thickening products, Cardenas advises consulting a professional. He suggests, “If you have sensitive skin or any scalp concerns, it’s wise to discuss it with your stylist or dermatologist before trying a hair thickening product.”

How to use hair-thickening products

To use hair thickener products effectively, Dr. Angela Brimhall, a board-certified dermatologist and founder of Sage Dermatology and Mohs Surgery, suggests keeping these application tips in mind before you start.

1. Start with clean hair: Before reaching for thickening mousse or topical fibers, Brimhall highlights the necessity of starting with clean hair when using any thickening products. “Washing your hair first helps eliminate dirt, excess oils and product buildup, which allows the thickening agents to adhere better to each hair strand,” she notes. “For optimal results, apply thickening products to freshly washed hair or think about using a thickening shampoo.”
2. Apply sparingly: When applying any hair thickening product, it’s best to start with a small amount and then increase it gradually as needed. Brimhall suggests, “Start with a little; you can always add more later. Using too much at once can lead to buildup and make your hair appear unnatural.”
3. Target the roots: While every product comes with unique application guidelines, Brimhall advises applying hair thickening products primarily to the roots for the best effect. She explains that when you use fibers, sprays or mousses, targeting the roots can greatly enhance your hair’s look by providing additional lift and volume.

Do hair-thickening products really work?

Hair thickening products work in different ways to create the appearance of fuller hair. Some coat each strand with proteins and polymers, while others use tiny fibers that cling to your existing hair.

However, when it comes to treatments and serums, patience is key. Dr. Viktoryia Kazlosukalya, a board-certified dermatologist and hair loss expert in New York City, emphasizes, “Patience is essential. Hair grows very slowly, so you might only notice changes after using the product consistently for four to six months.”

For the best results, it’s crucial to focus on scalp health when choosing hair thickening products. As Brimhall advises, “Always prioritize scalp health.” This means avoiding harsh ingredients like ethyl alcohol that can irritate sensitive skin and opting for gentler formulations that support both hair and scalp wellness.

Other ways to increase hair thickness

Besides using hair thickening products, Kate Johnson, an award-winning hair stylist, makeup artist, and founder of Glossed Finishing Studio, says that there are other ways to boost the thickness of your hair.

It’s important to be mindful of the styling products you choose. Johnson cautions against using flat irons, as they can compress the hair shaft and lead to thinning over time. Instead, she suggests opting for high-quality products that keep your hair hydrated and strong to help prevent breakage.

Additionally, specific styling techniques and haircut choices can create the illusion of thicker hair. Johnson adds, “Shorter cuts or layered styles are particularly beneficial for those with thin hair, as they can enhance volume and fullness.”

Frequently asked questions

Can I use multiple hair thickening products together?

According to Kozlovskaya, mixing different hair thickening products together is perfectly fine. She does, however, recommend being cautious with the amount of oil you apply to your scalp, as excessive oil can clog pores and cause inflammation, potentially making problems like dandruff worse.

Can hair thickening products damage my hair with long-term use?

“Using too many hair thickening products can lead to some problems,” explains Kozlovskaya. “If you have sensitive skin, it may worsen sensitivity and cause allergic contact dermatitis or irritant contact dermatitis. If the product also contains oils, it may lead to the overgrowth of our natural yeasts. Third, excessive product use can damage the hair shaft, making it more prone to breakage and dullness.”

To prevent any potential harm, Kozlovskaya suggests consulting a board-certified dermatologist before trying hair thickening products. “This way, you can uncover any underlying medical reasons for thinning hair and receive expert advice on suitable medications and treatments,” she says.

Are hair thickening products suitable for all hair types?

Cardenas points out that hair thickening products are not universally effective. He explains, “People with oily hair or naturally thick hair won’t see any benefits from using these products.”

Johnson also adds that individuals with naturally curly hair should steer clear of hair thickening products, as they can weigh down the curls and disrupt their natural texture.

How we chose

When selecting hair thickening products, there were several important factors we kept in mind. These included the ingredients used, the type of product available and the method of application, among other considerations. We included both expert- and editor-recommended products.

Meet the experts

• Mia Santiago is a celebrity hairstylist.
• Jae Manuel Cardenas is a senior stylist at the Sally Hershberger NoMad salon in New York City.
• Kate Johnson is an award-winning hair stylist, makeup artist, and founder of Glossed Finishing Studio.
• Angela Calisti is a hair expert and celebrity stylist based in New York City.
• Dr. Viktoryia Kazlosukalya is a board-certified dermatologist and hair loss expert based in New York City,
• Dr. Angela Brimhall is a board-certified dermatologist and founder of Sage Dermatology and Mohs Surgery.