Thanks to many hair- and scalp-care innovations, the best ingredients for hair growth products are a feasible means to achieving thicker, longer tresses right at home. But, with so many formulas claiming to promote thicker, fuller hair, it can feel confusing knowing what actually works. An effective hair growth solution is less about fancy marketing claims, but formulas rooted in ingredients that can improve hair’s density and fullness while limiting breakage. Ahead, five dermatologists weigh in on the hair loss treatments to know, plus, the best hair growth products to shop.
Vogue’s Favorite Hair Growth Products
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Peptides for Hair Growth
Of all the hair growth agents, peptides seem to be the running favorite of 2025. “Peptides can support hair growth by acting as signaling molecules that stimulate the hair follicle cells,” explains board-certified dermatologist Dr. Noah Gratch, adding that certain peptides can promote collagen production and improve blood circulation around the follicle, which helps create a healthier environment for hair growth. “While evidence is still limited, some studies suggest they can lengthen the growth phase of the hair cycle and improve hair density. They are often used as supportive ingredients rather than standalone treatments.”
Better Not Younger Superpower+ Advanced Densifying Serum
- Why We Love It: Powered by not only by peptides, but biotin, rosemary extract, and apple cider vinegar, as well, Better Not Younger’s serum is a well-rounded hair growth solution. As board-certified plastic surgeon Dr. Babak Azizzadeh previously explained, Procapil, a patented ingredient that combines apigenin, oleanolic acid, and a high concentration of the biomimetic peptide biotinoyl tripeptide-1, is the lead ingredient which “enhances the appearance of hair thickness by strengthening hair follicles and reducing signs of thinning.” Formulated as a lightweight gel, trust this will not weigh fine hair types down.
- Key Ingredients: Procapil™, niacinamide, biotin, rosemary extract, apple cider vinegar
- Type: Serum
- Size: 2 fl. oz
- How to Use: According to Better Not Younger, massage the serum onto the scalp for two to three minutes once daily.
Omi Hair Growth Peptides
- Why We Love It: Those interested in going the hair growth supplement route should consider this option by Omi. The brand’s clinical saw reduced hair loss by up to 47% in 90 days and 18% stronger hair, too—doing so by improving hair follicle health and reducing breakage via peptides, biotin, and B-vitamins. Non-GMO and free of fillers, two capsules are all you need to see results for yourself after three months.
- Key Ingredients: Peptides, biotin, B-vitamins
- Type: Capsule
- Size: 60 capsules
- How to Use: According to Omi, take two capsules per day.
Minoxidil for Hair Growth
According to board-certified dermatologist Dr. Candace Spann, minoxidil is the only topical drug approved by the FDA for hair growth. “It is thought to help keep hair in the growing phase, also known as anagen,” dermatologist Dr. Brendan Camp explains. Minoxidil, which works by improving blood flow to the scalp, can be taken orally or applied topically.
Rogaine 5% Minoxidil Foam Hair Regrowth Treatment
- Why We Love It: Again, Reavey recommends minoxidil to combat hair loss associated with menopause or male/female pattern baldness. “This type of hair loss is caused by DHT, an androgen enzyme that is secreted from the hair follicle and causes the hair growth cycle to shorten. Minoxidil helps to block DHT from being secreted, helping to maintain a healthier growth cycle.” Rogaine is one of the most popular over-the-counter products powered by minoxidil—not to mention FDA-approved—at a high concentration crafted into a foam that can be integrated into your hair-care regimen with ease. Grab this set which delivers a four-month supply, or, the brand also offers a top-rated minoxidil serum too that’s just as convenient to apply.
- Key Ingredients: Minoxidil 5%
- Type: Foam
- Size: 11 fl. oz. (2 bottles)
- How to Use:
- Why We Love It: Those who enjoy the simplicity and ease of a hair serum will like Hers’s Minoxidil Solution. Here, the brand blends 2% of the ingredient into a lightweight serum that can be applied seamlessly to the scalp via a dropper. The formulation also makes it convenient to apply day and night—sinking into the scalp quickly without disturbing your chosen style or weighing hair down.
- Key Ingredients: Minoxidil 2%
- Type: Serum
- Size: 2 fl. oz. (2 bottles)
- How to Use: According to Hers, apply 1 mL directly to the areas you wish to see hair regrowth twice daily.
Rosemary Oil for Hair Growth
“Rosemary oil has been clinically proven to have effects similar to minoxidil (the only topical medication FDA approved for hair growth),” Spann details. “It has demonstrated efficacy in helping to treat male or female pattern hair loss.” Dr. Camp says its efficacy lies in its ability to “fortify hair by improving moisture and strength [while] delivering nutrients and antioxidants, which protect hair follicle cells from oxidative stress.”
Nécessaire Rosemary Serum
- Why We Love It: “Rosemary extract has been studied for its ability to increase scalp circulation and possibly reduce inflammation around hair follicles,” Dr. Gratch says. “Some evidence suggests it may perform similarly to minoxidil in promoting hair growth when used consistently.” Powered by 70% rosemary water, oil, and extract alongside capixyl, this could be a great option for someone interested in a more natural approach, rooted in optimizing overall scalp health.
- Key Ingredients: Rosemary oil, rosemary water, rosemary extract, ceramides, 5% Capixyl
- Type: Serum
- Size: 30 mL / 1 fl. oz
- How to Use: According to Nécessaire, apply to scalp and massage with fingertips. This can be used on damp or dry hair.
Mielle Organics Rosemary Mint Scalp & Hair Strengthening Oil
- Why We Love It: Mielle’s scalp and hair oil is known to promote stronger, healthier tresses through a powerhouse blend of rosemary, mint, and biotin. The trio, working in tandem with a blend of 30 essential oils and extracts, comes together to condition hair follicles, relieve dry scalp, smooth split ends, and enhance hair elasticity. Rosemary oil for hair growth is my elixir of choice; I find that when applied to my curly hair, I experience less breakage over time. Because I generally use this natural ingredient elixir at night, my hair feels healthier come morning.
- Key Ingredients: Rosemary oil, peppermint oil, biotin, castor oil, jojoba oil
- Type: Oil
- Size: 2 fl. oz.
- How to use: According to Mielle, this can be applied to the scalp and combed from root to end. Otherwise, the oil works as a specialized scalp treatment, too, or to provide nourishment during protective styling.
Caffeine for Hair Growth
“Caffeine-containing hair products may encourage hair growth by improving blood flow and circulation around the root of the follicle,” Dr. Camp says, elaborating on how it can help the delivery of oxygen, vitamins, and nutrients that contribute to hair growth.
Champo Pitta Growth Serum
- Why We Love It: Whipping caffeine, creatine, peptides, and an Ayurvedic Haritaki fruit into a weightless serum, Champo’s Pitta Growth is a great growth solution for fine hair types. To put the formula to work, all you need to do is apply three to four drops onto the scalp and massage in daily to alleviate everything from thinning to dry, flakiness. Korab cites her penchant for it: “It’s designed to reduce shedding, boost circulation to the scalp, and support thicker, fuller-looking hair over time.”
- Key Ingredients: Caffeine, creatine amino acid, peptides, Haritaki fruit
- Type: Serum
- Size: 50 mL / 1.69 fl. oz
- How to Use: According to Champo, apply three to four drops onto the fingertips and massage where needed.
Typology R13 – Fortifying Treatment Shampoo
- Why We Love It: While it may not be a substitute for a prescribed hair loss treatment, a fortifying shampoo like Typology’s sulfate- and silicone-free R13 provides worthwhile support, per Dr. Gratch. “This shampoo is formulated to strengthen hair and reduce breakage, which can give the appearance of fuller, healthier hair,” he says, via 1% caffeine, peptides, and almond protein. “While shampoos generally have limited ability to stimulate true follicle growth, they can support scalp health by minimizing buildup and irritation. A fortified formula with active botanicals may help reduce shedding related to weak hair shafts.”
- Key Ingredients: 1% caffeine, acetyl tetrapeptide-3, almond protein, lavender oil, rosemary oil
- Type: Shampoo
- Size: 6.76 fl. oz
- How to Use: According to Typology, apply a quarter-size amount, lather from root to ends, and massage into scalp. Rinse thoroughly before moving through your routine.
Biotin for Hair Growth
“Biotin, also known as vitamin B7, is thought to support the growth of hair, skin and nails because it is involved in a variety of cellular functions and enzymatic reactions that help convert food into energy,” says Dr. Camp. This is one of those density-boosting ingredients you’re likely most familiar with, as it leads many of the industry’s most acclaimed vitamins for hair growth. Below, several options that contain biotin.
Nutrafol Women Hair Growth Supplement
- Why We Love It: Dermatologist Dr. Nazanin Saedi says that those in search of a hair loss treatment as a result of a deficiency (such as vitamin D, iron, or zinc) can benefit from ingestible supplements. “Ingestibles may not work for everyone experiencing hair loss, but it can’t hurt,” she notes. These supplements by Nutrafol are one of her favorites. “[This] has vitamin E, which has been shown to help with hair loss and hair damage caused by oxidative stress, which is an imbalance between free radicals and antioxidants in your body. An overload of free radicals is bad because it can cause damage to fatty tissue, DNA, and proteins in your body.”
- Key Ingredients: Ashwagandha, saw palmetto, marine collagen peptides, curcumin, resveratrol, keratin, biotin
- Type: Capsule
- Size: 120 capsules
- How to use: Nutrafol recommends taking four capsules, once per day with a meal, to see results in three to six months.
Vegamour Gro Biotin Gummies
- Why We Love It: Gummy ingestibles are a no-fuss way to add a dietary supplement to your day. These have a tasty strawberry flavor and are packed with biotin, folic acid, and a slew of vitamins and minerals to support the body’s production of collagen and a healthy scalp.
- Key Ingredients: Biotin, vitamins A, B5, C, E, 6, 12
- Type: Gummies
- Size: 30 gummy hair vitamins
- How to use: “The most important thing is to stick with your regimen to receive the most optimal results,” says Hodgdon. “Whether you’re massaging a topical hair growth serum into your scalp every night or washing your biotin gummies down every morning, you have to be consistent.” Here, one gummy per day is all you need.
Viviscal Hair Growth Supplements
- Why We Love It: “Viviscal supplements can promote hair growth by increasing circulating levels of nutrients that support hair growth and hair strength,” notes Murphy-Rose. “There is data to suggest that Viviscal may enhance the proliferation of dermal papillae cells, critical to the hair growth cycle, specifically supporting the anagen or growth phase.” She continues that because nutrient deficiencies can contribute to hair loss, Viviscal’s formulation featuring hair health nutrients like vitamins, protein, and fatty acids could prove beneficial. Murphy-Rose does, however, emphasize consulting first with your physician before taking these supplements, particularly as this formula features shark-derived collagen.
- Key Ingredients: Marine collagen (derived from shark), iron, zinc, biotin, vitamin C, niacin, calcium, silica, horsetail extract
- Type: Tablet
- Size: 60 tablets
- How to use: One tablet twice daily (after a meal) for three to six months.
ReTress Hair Rejuvenation Kit
- Why We Love It: In Spann’s experience, biotin can be helpful in stimulating hair growth when taken orally or applied topically. So, it’s no surprise she turned to it for her brand ReTress—which “uses a biotin tripeptide as one of its main active ingredients to help improve blood flow to the follicles, therefore reducing shedding and helping stimulate hair growth.” This kit features all you need to get the full experience.
- Key Ingredients: Biotin
- Type: A shampoo, conditioner, serum, and tablet supplement
- Size: Shampoo & Conditioner: 8.5 fl. oz, Serum: 1.4 fl. oz, Supplement: 30 tablets
- How to Use: The shampoo and conditioner can be used on wash day; while, its serum and tablet supplements can be taken daily.
Redensyl for Hair Growth
According to Dr. Gratch, redensyl is a cosmetic ingredient that has gained attention for targeting hair follicle stem cells and dermal papilla cells. “It is thought to help promote the anagen, or growth phase, of the hair cycle while reducing hair fall in the resting phase,” he says. “Clinical studies, though small and company-sponsored, show promising results in terms of hair density and reduced shedding. It can be a useful adjunct to proven treatments, but it is not as well studied as FDA-approved options like minoxidil.” Korab agrees, adding that “Studies suggest it can reduce shedding, improve density, and even promote new hair growth within a few months, making it a promising ingredient, although results can vary from person to person.”
The Ordinary Multi-Peptide Serum for Hair Density
- Why We Love It: The Ordinary’s Multi-Peptide formula is one of my favorite hair serums because of how hydrating it is. Powered by not only caffeine and redensyl to boost hair density, but botanical extracts and a potent peptide blend that stimulates blood flow to the follicles and promotes stronger hair strands, this gives the scalp precious T.LC. to help anyone achieve their hair goals. Best applied at night before bed, this boasts a slip, water-like texture that the scalp drinks up in a matter of seconds.
- Key Ingredients: Caffeine, peptides, redensyl, procapil, scutellaria baicalensis root extract, centella asiatica leaf extract
- Type: Serum
- Size: 2 fl. oz/ 60 mL
- How to Use: Massage onto a clean, dry scalp once daily.
Agent Nateur holi(growth) 84 Advanced Leave-In Growth Scalp Treatment
- Why We Love It: “This treatment combines peptides, plant extracts, and other active ingredients to improve scalp health and potentially stimulate follicles,” Dr. Gratch says. “The inclusion of peptides may help with follicle signaling and strengthen the hair shaft over time. It may provide benefits in reducing shedding and improving hair texture, particularly if used consistently.”
- Key Ingredients: Redensyl, Follicusan, spermidine, copper peptides, rosemary extract, astragalus
- Type: Spray
- Size: 120 mL / 4 oz
- How to Use: According to Agent Nateur, spritz directly onto the scalp and massage in.
What Causes Hair Loss and Hair Thinning
Let’s start at the beginning by discussing why someone might be experiencing hair loss, thinning hair, or slow hair growth in the first place, beginning with gender. “There has been a historic assumption that hair loss is a male concern, and this is reflected in the traditional solutions available,” says Vegamour’s Dan Hodgdon, which bolsters no surprise that consumers are looking for products that tailor their approach to address female hair loss specifically. “Hair loss in women is incredibly common—over 80% of women will experience hair loss at some point in their lives, and over 40% of alopecia sufferers are women,” he adds.
“So many different factors can contribute to hair loss,” says trichologist Helen Reavey, who lists age, stress levels, diet, illness, hormonal imbalances, or even product buildup as potential causes. She continues that distinguishing the cause of hair loss is key, as treatment methods could vary widely. Hodgdon builds that certain conditions like alopecia or telogen effluvium (temporary hair loss after an episode of severe stress) can also have an impact.
“There are so many causes of hair thinning, and many with targeted treatments, that it is firstly essential to undergo a physical examination and discuss your history with a professional,” says dermatologist Dr. Blair Murphy-Rose, as your diagnosis will determine the most effective treatment. In addition to hair growth products, “there are other important ways to improve hair health; these include maintaining a well-balanced diet for adequate nutrition, getting sufficient sleep and reducing stress.” So, for best results, you’ll likely want to explore lifestyle changes whilst exploring hair growth treatments.
What are hair growth products?
Hodgdon describes this category as “[products] that help promote and support a healthy hair-growth cycle”—essentially stimulating the hair follicle. Our experts explain most products look to address a single cause or symptom, which Hodgdon places into one of two categories: topical and ingestible treatments—the latter, Reavey says, has seen immense growth to support hair health from within. This could include items like best shampoo for hair thinning or collagen supplements.
Do hair growth products really work?
According to Cann, there are many hair growth products that actually work so long as the hair follicle isn’t scarred (a medical term for cicatricial alopecia—a condition that destroys the hair follicle caused by inflammation or trauma.) “When treating hair loss, it is important to understand the root cause of hair loss when choosing a product or treatment,” she says. “Oftentimes a multifaceted approach is required in order to optimize outcomes.”
Who can actually benefit from hair growth products?
“Hair growth products work best for those whose hair follicles have not been scarred,” says Cann. “The best results are achieved when hair loss is treated early.” Dr. Camp notes that those looking to maintain the strength and health of their hair can benefit most from hair growth products; whereas those with active hair loss and shedding should consult with a board-certified dermatologist.
The Key Ingredients You Should Look for in Hair-Growth Products
Whether you’re looking to prevent or treat hair loss, your first step may be consulting with a trusted dermatologist or trichologist to determine the root cause and create a plan of next steps. Saedi recommends prostaglandin analogs to help promote growth or supplementing your diet with biotin.
Aside from prescription formulas, Hodgdon is partial to clean, plant-based actives, which are at the heart of Vegamour’s lineup. “I recommend using products that ensure these actives are bio-available (readily absorbed by the body) and included at effective levels,” he says. Of these, he specifically highlights turmeric, topical caffeine, red clover, mung bean extract, and CBD.
Whereas Reavey recites an approach rooted in the root of hair loss. “If it is hair loss that is tied to environmental factors like stress or poor diet, I would suggest products that include ingredients like peptides, caffeine, rosemary, ginger root, red leaf clover, and basil leaf,” she says in light of these ingredients’ antioxidant properties, along with apple stem cells, which can extend the growth phase of hair follicles. For hair loss as a result of menopause or female/male pattern baldness, she’d recommend incorporating minoxidil. As for supplements to fill any nutritional gaps in your diet, she “would suggest taking a supplement that includes biotin, zinc, selenium, and iron at the least, as these are all minerals necessary for growth.”
How long does it take hair growth products to work?
Per Dr. Camp, scalp hair grows slowly, roughly 1 cm (or 0.4 inches) per month. “As a result, it is recommended to use a hair growth product for at least 3-4 months before deciding if it’s effective or not.” Cann agrees, emphasizing that because hair grows in cycles, it will likely require continued, long term use to maintain your results.
Why You Should Incorporate Hair-Growth Products
“Healthy, long, thick hair is the dream. As a dermatologist, I tell my patients that healthy hair starts with a healthy scalp,” says Saedi. “If you have dandruff, an itchy scalp, or scalp psoriasis, you need to start with addressing that first. If these conditions are chronic, talk to a dermatologist who can help you get on the right path to healing your scalp.”
What’s more, Reavey emphasizes that even your styling choices can play a part in hair loss, especially in certain areas of your scalp. “A person may see their hairline becoming visibly thinner, or that more of their scalp is becoming apparent through their parting,” she notes. “Other common indicators include your ponytail feeling less full or that you are shedding more hair than normal into your brush.”