We tested over 43 brands to find the BEST hair growth serums that actually work.

By Kimberly Webber MD, Certified Hair Growth Trichologist

I've treated HUNDREDS of women for both hair loss and hair growth in the last 15 years. Many products have came and went, but there are only a few worth taking - as we all know!

What to Look for in Hair Growth Products:

• Products with Saw Palmetto (DHT Blocker)
• Products with diverse, all-in-one blends
• Science Based Formulas

Why?

Most brands sell products with filler, lack of science-based ingredients, and simple formulas, leaving most women with a bad experience of using ineffective product.

I spent months putting this report together, looking through hundreds of studies along the way, and using my own clinical expertise to give you guys the best products to try.

Let's dive into the 2025 rankings!

I've tested dozens of hair growth products, with our in-house testers team, to determine our TOP FIVE choices. 

We compared effectiveness but also safety and price to make sure you find the hair growth serum that’s right for you!

Let’s get started!

Effectiveness: 99%

Safety: 100%

Price: $

Overall: A+

This is by far our favorite choice when it comes to a simple hair growth serum that can reinvigorate hair follicles by stimulating blood flow to the scalp, triggering more hair growth while thickening and strengthening your hair.

 Alphuara's BLOOM+ Serum is the first ever hair growth serum backed by over 30+ clinical trials and proven to regrow hair on your scalp, along with eyelashes and eyebrows too!

 Alphuara's BLOOM+ Serum is best for people with thinning hair, weak strands, brittle split ends, and unhealthy roots, and those looking for an all-in-one hair growth solution that actually works (with a 100% money-back guarantee for those who don't see results in 60 days).

*our results using the BLOOM+ formulation, 4cm of new growth and thicker follicles, in 6 weeks.* (above)

Best of all, it was the only product on our list we found a limited time 50% off code, "SECRET50", use this code at checkout for 50% off! (this code isn't advertised online, in the past it was taken down, it is working as of today.)

This made it one of the most affordable products on the market for one that actually works. Give it a try using the discount and let us know your results!

"Alphaura's Bloom+ is the most advanced and effective hair growth solution on the market for hair, lashes, and eyebrows."

-Lou Cayano | Santa Monica MD

Effectiveness: 85%

Safety: 85%

Price: $$$$

Overall: B+

BloomWell Advanced Hair Vitamins by Little Miss Mineral are a great supplement to take alongside with a serum, they fight hair loss internally and fix the nutrient deficiencies which cause hair loss as we age. We put this product second as its a great companion product for a serum, but serums can get significant spot-focused results.

Effectiveness: 85%

Safety: 82%

Price: $$$$

Overall: B+

Nutrafol's hair serum is good for those starting their hair growth journey, who don't need massive results but just want to start using something that can help them. It doesn't get nearly the same results as other serums, like Alphaura's Bloom+, because it doesnt use clinically proven ingredients, but it's still a good option.

Effectiveness: 80%

Safety: 80%

Price: $$$

Overall: B

A very popular product from Vegamour, this brand creates vegan hair serums which have some good ingredients, but it clearly wasn't as effective as some of our other options. We put it on the list for it's popularity, but these larger brands typically have more filler ingredients and there are mixed reviews on if it works or not.

Effectiveness: 80%

Safety: 80%

Price: $

Overall: B+

This multi-peptide serum is set at a really great price with a few strong ingredients. The main goal is to increase hair density through the use of Redensyl, Procapil, and Baicapil. While we like the price and reviews, we haven’t seen the results we think you can get with other products. Alphaura, which is close to a similar price, and have thousands of great reviews, also gave results far beyond that of The Ordinary, along with other products.

While we feel we recommended some great hair serum products to help rebuild hair follicles, activate roots, and strengthen your hair, we believe Alphaura's product was the top choice. We wanted to talk further with our investigative reporter Stephanie Marianne who helped create the rankings list and how Alphaura's Bloom+ worked for her. Stephanie tells the story.

Personally, I never believed in the effectiveness of hair re-growth, anti-baldness anything. “Time cannot be reversed,” I used to tell my friends. Too many of them have been tricked into buying some wild oil or shampoo just to find out it’s a waste of money. So I’ve avoided it at all costs.

But then my best friend, who I trust with my life, swore by Alphaura's BLOOM+ Serum. She would place it in her hair everyday for 10 minutes before showering. After a few weeks, her hair looked thicker and fuller than ever before. She even had patches at the top of her forehead that seemed to have filled in quite nicely. It was even more impressive when she showed me the before and after images throughout the weeks of using Alphaura's Bloom+ Serum.

I had always been self-conscious about my thinning hair, so I begged her to let me borrow her Bloom+ Serum, but instead she gave me a secret 50% off code, SECRET50, and I ordered my own BLOOM+ Serum immediately. 

I received a package two days later and applied the Serum for the first time that night before a shower. The application is super simple, you just add a few small drops of serum throughout your hair and rub it in down to the scalp. Then, you just let it sit for 10 minutes or so before starting your normal shower routine. That’s all you need! 

HOW DOES ALPHAURA'S BLOOM+ SERUM WORK?

I, of course, was expecting immediate results, but it actually takes a few weeks to see real results. In the meantime, I started to do my research to find out how Alphaura's Serum works and how it differentiates itself from other serum growth products. 

A combination of essential oils and nutrients help not only strengthen hair but reactivate roots that have stopped growing long ago…

It’s quite simple, just as our bodies can exert less energy when we get older (remember staying up all night in your twenties?), our hair follows a similar pattern. When old hairs fall out, typically a new root is triggered and energy is spent building a new hair follicle. However, the older we get, the less energy is distributed to these roots. That’s when thinning and balding occur.

The key to a fuller head of hair starts with reactivating your roots, and that’s exactly what Alphaura's BLOOM+ Serum aims to do. With a Hair Growth Complex filled with DHT Blockers, Argan Oil, Castor Oil, Silk Protein, & many more proven ingredients, BLOOM+ is the only serum that uses the power of science to guarantee you see hair growth.

So, finally, after 4 weeks, I decided to check if I could see results… and wow! The areas of my hair that were previously patchy began to fill out. Plus my hair felt fuller and stronger. I was simply amazed at how good my hair felt. 

By far, Alphaura's BLOOM+ Serum, is the safest and most effective hair growth serum EVER.

I’ve used Alphaura's Serum for over six months and it has done wonders! -Carrie, 44

This is the trick for anyone with thinning hair. Truly a life saver! -Barb, 40

By week 6 I was a completely changed woman because of Alphaura's Bloom+ Serum. -Melanie, 55