4,500+ Shoppers Swear By This Serum For Longer Hair — Here's What An Expert Says

Hair growth is a personal journey. You see, shedding can happen for a number of reasons—whether it's stress, hormonal shifts, or scalp inflammation—so what restores one person's receding hairline might not have the same miraculous effects for someone else's strands.

But when nearly 5,000 people swear a serum has transformed the health of their mane? Well, that's certainly something to consider.

Such is the case with Vegamour's GRO Hair Serum: Thousands have sung the praises of this nutrient-rich formula (this beauty editor included), and many say it's the only remedy that helped when nothing else worked.

This cult-favorite serum contains nicotiana benthamiana for its anti-inflammatory properties, turmeric to calm and nourish the scalp, and red clover and mung bean extracts to neutralize free radicals. Mung bean sprouts also have a high concentration of zinc, silica, iron, and several vitamins, while red clover contains a very powerful flavonoid that is able to soothe irritated scalps.

All of these ingredients also have antioxidant properties, which can help combat free radicals from UV rays or pollution; research shows oxidative stress from free radicals plays a role in hair loss in adults1, so tending to the hair and scalp with antioxidants is critical.

OK, enough science speak—let's chat results. There's a reason we've named the Vegamour Gro Serum one of the best hair growth products and one of the best products for thinning hair.

Thanks to those aforementioned ingredients, more than 4,000 users have reported success with Vegamour's potent serum, especially in targeted areas like the hairline or around the temples.

"I have used this serum for 6 months straight, and I can say for sure that it works," one reviewer gushes. "I have Hormonal and other health issues that cause me to have slow hair growth, so I never expected a miracle with this serum. But I am happy to share that my hair showed incredible improvement. My bald spots on the scalp are definitely filling up slowly." 

As the reviewer notes, no serum is going to give you instant results—even one as powerful as Vegamour's. But with consistent use (the brand promises fuller-looking hair in just two months, with peak results around three), you'll likely see a difference.

"At the very least, I know that my hair is growing a lot faster," another shopper shares. "Even my coworkers have said that my hair just randomly got way longer. So I recommend this product to a lot of my clients. I am a hairstylist. So if you're dealing with hair loss, this would be the first product I would recommend and honestly the only one, other than vitamins." 

Certified trichologist Bridgette Hill, founder of Root Cause Scalp Analysis, is a fan of using hair growth serums to promote a thicker mane. "Most topicals are formulated to be vasodilators," she tells mbg. "Meaning that they open the blood vessels, which allow the scalp muscles (arrector pili) in the hair follicle to relax, allowing for blood and nutrients to flow more easily through the blood vessel."

Caffeine, in particular, is a vasodilator, which improves circulation and blood flow, and it can provide DHT-blocking properties (DHT is a trigger to androgenic hair loss, she says). And according to Hill, topical caffeine can also strengthen the hair shaft and promote a longer, stronger hair fiber.

Mung bean extracts, she adds, are "believed to strengthen the dermal papilla. The dermal papilla, which is at the base of the hair follicle, regulates hair growth functions2." Finally, "There are exciting discoveries in the world of peptides and hair growth," Hill says. Namely, research has found that certain peptides can bind to protein receptors responsible for hair growth3.

"Additionally, peptides reduce inflammation," she adds.

If you're on the hunt for a new hair growth serum, experts, reviewers, and our team can't recommend Vegamour's formula enough. My one and only callout is that the bottle is quite small; many reviewers say that they opt for at least two to three refills before noticing their fullest results.