It's no secret that hair regrowth takes time, patience and money. Although we can’t change our natural hair texture, the right hair thickening products can help revive flat locks and improve a dry scalp, no matter if it’s naturally fine or thinning due to aging, stress or genetics.
According to the Cleveland Clinic, hair thinning and loss is more common than not in women. It is a completely normal, and more often, stressful process. Though, hair-thickening solutions are an effective treatment for thickening strands. They often 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, for instance.
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. We also enlisted them to help round up the best ingredients for growth and volume, along with their best tips for application, styling and more.
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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.
Key ingredients to look for in hair thickening products
When it comes to long-term improvement in your hair's density, using the right ingredients for growth determines how well they assist with improving hair strength (for resistance to future breakage), encouraging healthy hair follicles, boosting volume and aiding in overall scalp and hair health.
In previous reporting, we chatted with dermatologists and hair experts to discover the key ingredients to look out for in a hair thickening product:
- Minoxidil: A universally-loved ingredient by dermatologists with clinically proven results. "Results vary, but many do see significant growth with consistent use for at least eight to 10 months,” Dr. Blair Murphy-Rose said in our Minoxidil coverage.
- Biotin: When we spoke to experts about the ingredient, they revealed oral and topical biotin doesn't have much effect on hair growth. But when it comes to optimal hair health, topical biotin can “can help with skin hydration of the scalp,” Dr. Joyce Davis, a dermatologist in New York City, previously shared. “This can be beneficial if you have a dry scalp.”
- Peptides: For a dry, inflamed scalp, which can affect overall hair health, look to peptides to soothe. "They can help improve the scalp’s environment, strengthen the hair shaft, reduce inflammation around follicles and signal pathways involved in hair growth," added Dr. Jenna Queller, a board-certified dermatologist, in our peptides coverage.
- Rosemary oil: Minoxidil can be toxic to children or pets. If you have at least one in your home, a natural and effective alternative is rosemary oil. "Rosemary oil is equivalent to 2.5% minoxidil, which is pretty impressive,” Dr. Michelle Henry, a board-certified dermatologist in New York City, previously told us.
- Caffeine: “Caffeine is a stimulant that increases circulation, allowing beneficial nutrients and oxygen to be delivered to the hair follicles to keep them healthy,” Dr. Michele Green, a board-certified dermatologist in New York City, shared in another story.
The best hair thickening products, according to experts
Best root spray:
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.
Best for filling in spots:
Topical fibers are another hair thickening product you can use. One notable brand is Toppik Hair Building Fibers, which is highly recommended by Dr. Angela Brimhall, a board-certified dermatologist and founder of Sage Dermatology and Mohs Surgery. 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. Pro tip: after applying the fibers, use a light spritz of hair spray to hold everything in place.
Best styling mousse:
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.
Best spray for volume:
If you’re in search of a hairspray that adds thickness with each spritz, look no further than Kate Johnson’s, an award-winning hair stylist, makeup artist and founder of Glossed Finishing Studio, 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 is 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.
Best serum for fall out:
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, tested by editors
Best thickening mask:
Associate editor Shannon Garlin loves this mask because of its volumizing abilities, helping her hair achieve the perfect at-home blowout look. It’s hassle-free to use, she says, further noting that it soothes both her hair and scalp.
Best shampoo and conditioner duo:
Deputy managing editor Jess Bender says this is one of her favorite products she discovered last year: “I’m always skeptical when it comes to products like this actually delivering on their promises (I’ve been disappointed far too many times), but the way this gave my tresses extra height and bounce, my goodness! I’ve been self-conscious about how much my hair has thinned out over the last couple of years, so this combination has done a standup just giving the illusion that my hair looks as full as it used to,” she emphasizes.
A viral hair serum:
Garlin also enjoys this viral serum for a more hydrated, less flaky scalp. “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.”
For targeted application:
Most hair serums come in a dropper, but this one from Dr. Groot comes in a roll-on applicator for easier and targeted application. The serum was also a recent Shop TODAY Hair Awards winner!
Writer Jannely Espinal has been using this formula since December and says, “I’ve recently noticed thinning along my hairline, especially on the right side and it’s become a growing concern for me. I started applying this treatment with the applicator to those weaker areas, and over time, I’ve seen a gradual reduction in breakage.”
Best styling foam:
Deputy editorial director Ali Deabler says this award-winner “adds volume and makes hair appear thicker and fuller, even into the next day.”
In her review of the product, freelance writer Sophie van Bastelaer touted the same, adding that "no matter your hair length, you’ll be happy with this product’s staying power."
Best shampoo for long-term growth:
Commerce editor and producer Julie Ricevuto contributed her recent hair growth journey to a three-step system she created, which included Nioxin’s award-winning Hair Fall Defense Shampoo. In her review, she said the shampoo created “the optimal environment for hair to grow” by deeply cleansing and removing build-up on the scalp.
Best rosemary oil:
I [San Miguel] previously reviewed Briogeo's pre-wash hair oil, which I've consistently used before wash days to improve overall scalp health. Since I tested it, I have seen improvement in flakiness, dryness and oiliness since rosemary oil helps support the scalp and heathy follicles due to it being antioxidant-rich.
Best shampoo for scalp health:
This is another Dr. Groot product loved by Garlin: “This thickening shampoo provides so much nourishment and volume; I’m in love with the whole system,” the associate editor says. “It has all the key ingredients for thicker hair, too, including rosemary and caffeine. My hair feels so soft and lush after each use.”
A tried-and-true favorite:
It’s no secret that Minoxidil is a key ingredient for promoting thicker, healthier strands. Whether for you or for him, using this award-winning topical treatment frequently can welcome new hair growth in just a few months.
For an instant boost:
Bender says she tried this texturizing spray at a recent press event, exclaiming that her hair has never looked that good in years. “In the span of about 20 minutes, my hair went from flat and flailing to voluminous and absolutely va-va-voom thanks to this texturizing spray. Rarely do I get speechless about a hair product, but the results this provided were nothing short of incredible. I don’t think I’ve ever received as many compliments about my locks as I did that one day at work, so I threw this in the cart and bought it right when I got home that evening,” she says.
Best treatment:
Cécred is a hair care line from singer-songwriter Beyoncé. One of their bestselling products that’s been all the rage is the Restoring Hair & Edge Drops. “[It] made my hair feel more full without weighing down my curls,” mentioned Nicole Collazo Santana, social media video producer for TODAY, without leaving her hair with an oily or greasy residue.
Best red light therapy solution:
Ricevuto also included the HigherDOSE Red Light Hat in her three-step routine and saw a noticeable difference in growth and shedding.
“This device uses 650 nanometers of red light and 120 powerful LED diodes to boost blood flow to your scalp, helping to nourish hair follicles and minimize shedding,” hair stylist Rogerio Cavalcante previously shared in our red light hats coverage. “Over time, this can lead to less hair loss, stronger strands and visible hair growth.”
What are the 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.
How to use hair-thickening products effectively
To use hair thickener products effectively, Brimhall suggests keeping these application tips in mind before you start.
- 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.”
- 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.”
- 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.
Natural and alternative methods to increase hair thickness
Besides using hair thickening products, Johnson 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
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.”
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.
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.
“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.
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
At Shop TODAY, our reporters interview a range of qualified sources and experts to capture a wide scope of perspectives on thickening hair products. We also make sure that all expert guidance and recommendations are made independently and with no undisclosed financial conflicts of interest.
- 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.
- Dr. Blair Murphy-Rose, MD, is a cosmetic and medical dermatologist specializing in facial rejuvenation at Newport Beach Dermatology & Plastic Surgery and clinical instructor of dermatology at Cornell.
- Dr. Jenna Queller, MD, is a board-certified dermatologist and the founder of DermWorks in Boca Raton, Florida. In addition to general dermatology, she specializes in anti-aging treatments, hair loss and skin cancer prevention.
- Dr. Joyce Davis, MD, is a board-certified dermatologist and dermatologic surgeon in New York City. She has been in private practice for over 30 years, and her practice includes both medical and cosmetic dermatology. She has a special interest in treating hair loss.
- Dr. Michelle Henry, MD, is a board-certified dermatologist and and dermatologic surgeon. She is the CEO and founder of Skin & Aesthetic Surgery of Manhattan, as well as a Clinical Instructor of Dermatology at Weill Cornell Medical College.
- Dr. Michele Green, MD, is a board-certified dermatologist in New York City.
- Rogerio Cavalcante is a hairstylist, colorist and the founder of The Second Floor Salon in New York, New York.
