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Courtesy of Brands Beauty Hairstyles, Cuts & Color Trends The 11 Best Hair Growth Serums for Thicker Hair, According to Hair Experts The 11 Best Hair Growth Serums for Thicker Hair, According to Hair Experts Including top picks from Vegamour, Cécred, and more
Thinning and loss are major reasons to invest in one of the best hair growth serums, especially after realizing your ponytail feels a little lighter than usual. But contrary to what some beauty lovers may believe, hair doesn’t need to show visible signs of thinning to incorporate one of the best hair growth serums into your routine.
“You lose approximately 80 to 100 hairs a day,” Julie Dickson , founder of Joon Drop Hair Salon, tells Bazaar . “Hair growth serums, after nutrition, are the first line of defense in slowing fallout and encouraging growth. If you’re waiting for visible signs of thinning before you start addressing hair loss, it’s a little late.”
Generally, hair loss is a physiological response to stress, shifting hormones, genetics, or illness, and it affects women in every age bracket. Fortunately, today’s best hair growth serums for thicker hair—and the growing category of hair growth devices —don’t just promise volume; they’re backed by dermatologists, powered by clinical ingredients, and designed to treat the scalp as seriously as the skin.
We asked leading dermatologists to break down the most effective formulas and the ingredients worth paying attention to. Whether you’re dealing with shedding , postpartum changes , or the slow, frustrating creep of genetic thinning, we've pulled together the best hair growth serums to shop now that deliver real, measurable results.
This non-greasy serum is designed to deliver visibly thicker, stronger hair in 90 days by replenishing key nutrients directly at the scalp. “It includes plant-based DHT blockers and peptides and is good for sensitive scalps,” says dermatologist Kseniya Kobets , who often recommends it to patients experiencing early signs of hair loss or inflammation.
Powered by Redensyl, a plant-based active known to support hair density and reduce shedding, this serum is a go-to for thinning. “It’s another good option,” adds Kobets. “It’s vegan, fragrance-free, and formulated with Redensyl, making it effective for early thinning.” For more intensive hair thinning and fall-out, Vegamour also offers an advanced version of its beloved serum.
Fans of Nécessaire's coveted Rosemary shampoo and conditioner should consider adding its plant-based, quick-drying serum to their hair care regimen. Its hypoallergenic formula is not only EU-compliant but also dermatologist-tested to enhance hair density and strength while reducing thinning over time.
These Beyoncé-approved hair and edge drops are among her brand's top-selling products for good reason—they work. The formula combines a proprietary blend of peptides with strengthening ingredients, including fermented rice powder, biotin, and Cécred's keratin ferment, to increase scalp density and overall hair health. And, nicely, the drops can even be used with wigs, extensions, and more.
This calming serum takes a wellness-first approach to scalp care, combining adaptogens, botanicals, and CBD to soothe inflammation and support a healthier environment for hair growth. Designed for stressed-out scalps, the serum helps reduce flakiness and balance o…