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

By Kimberly Webber

(RBC) - It's one of every girls dreams, to have long, thick hair that reminds you of your teenage years, without wasting time and money on wigs, transplants, and expensive treatments..

But genetics limit our "hair growth potential"..

Contrary to what you see on social media, It's actually very rare to have natural, thick hair as you age..

And most women have genetically low "hair growth potential"..

Especially after ages 30+.

Luckily, there are plenty of products which target this problem of low "hair growth potential", but few actually solve it with science..

And it CAN be solved, as multiple new studies have proved in late 2023.

So how do you know which will work and which won’t? 

That’s where we come in!

Hair Growth Serums are concentrated formulas designed to reactivate your hair roots and spark rapid growth.

Of course, every formula is different and only some serums use science to target the problem of "low hair growth potential".

Here are the results! 👇

HOW WE RANKED OUR LIST: 

We compared effectiveness, whether or not they target hair growth potential and also safety and price to make sure you find the hair growth serum that’s right for you!

We also tested each product for 2 weeks to see the actual results ourselves.

See the results below!

Effectiveness: 97%

Targets Hair Growth Potential: Yes ✅

Safety: 99%

Price: $ (special offer below)

Overall: A+

This is by far our favorite choice when it comes to an hair growth serum that can increase your "hair growth potential" without harmful chemicals like most other options.

 Alphuara's BLOOM+ Growth Serum is the first ever hair growth serum backed by over 13+ clinical trials and proven to grow longer, thicker hair and fill in bald spots.

This serum is best for people with genetically weaker hair due to "low hair growth potential" 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 30 days).

Best of all, it was the only product on our list that we found a special 50% off code for, "SECRET50", use this code at checkout for 50% off! (please don't tell anyone, we don't want the code to get taken down.)

We saw significant hair growth in the scalp and corners using this product in our 2 week trial. We were pretty shocked by how well this science-based formula performed!

This made it one of the most affordable products on the market for one that actually works. Less than $35 per month supply when you use the above code on a 3-6 month bundle. You can expect to start seeing results in the first few weeks. (with best results after 3-6 months). We saw results in our first week using their product.

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

- Jessica Thomas | Venice Beach MD

Effectiveness: 82%

Targets Hair Growth Potential: No ❌

Safety: 85%

Price: $$$$

Overall: B+

This hair growth serum comes second for a few reasons. It's a great product that can help your hair shine and promote scalp health, but we'd like to see better ingredients proven by studies (this uses basic ingredients only).

We saw hair growth with this product in our 2 week trial, but experienced a lot of hair shedding.

This product costs over $69 per month to use, but it does promote scalp health and hair shine, making it a good option for those who want a simple formula and don't care as much about results.

Effectiveness: 80%

Targets Hair Growth Potential: No ❌

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.

We saw slight hair growth with this product in the first 2 weeks.

This serum costs $69 per month to use.

Effectiveness: 80%

Targets Hair Growth Potential: No ❌

Safety: 80%

Price: $$$

Overall: B

A very interesting offer from Prose, this brand creates custom hair oils based on your specific needs. You start with a consultation to find your specific needs, including hair health, shine, moisture, and renewal.

While a great offer, it’s quite expensive and doesn’t necessarily guarantee hair growth. It's more for hair health.

We saw darker hairs in our 2 weeks trial using this product, but no new growth.

This serum costs $72 per month to use.

Effectiveness: 76%

Targets Hair Growth Potential: No ❌

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 cheaper and more effective, has thousands of great reviews, also gave results far beyond that of The Ordinary, along with other products on our list.

We didn't see growth with this product in our 2 week trial.

This serum costs $59 per month to use.

While we feel we recommended some great hair growth serum products to help grow hair thicker, longer, and stronger, we found that Alphaura's new product was the top choice by far.

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 growth products until recently when I started testing them..

“Genetics cannot be changed” I used to tell my friends. Too many of them have been tricked into buying some wild oil or serum to find out it didn't work. So I’ve avoided it at all costs in the past, and just lived with my thin, balding hair...

But then my best friend, who I trust with my life, swore by Alphaura's BLOOM+ Growth Serum. She would apply it to her scalp problem areas every morning. After a few weeks, her hair looked thicker and fuller than I'd ever seen it before. She even had to get hair gel to hide her new alfalfa hairs from sprouting up in her part!

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 seven days later and applied the Serum for the first time that morning before work.

The application is super simple, you just apply the serum to your problem areas using the applicator, once per day.

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 scientifically proven essential oils and nutrients help not only thicken sparse hairs but increases your genetic hair growth potential through "root activation".

It’s quite simple, your hair follicles have a set "growth potential" they can grow to if you are healthy.

Most women have low "growth potential" due to a sneaky hormone called DHT, which women start to produce after age 18.

Ever wonder why so many men have super long, thick hair?

It's because men don't produce DHT in their hair follicles until MUCH older.. Not until they are in their 50s.. (it's also the same reason men bald and women don't)

So the fact is, you need to target "hair growth potential" or your hair WON'T grow at all.

This is why so many products don't work, as these discoveries were just made in new studies from late 2023.

They key to increasing hair growth potential based on science, are the following 3 concepts:

• Block DHT In Your Hair Follicles
• Increase Hair Follicle Bloodflow
• Extend Your Hair Growth Cycle Window

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 & thickness.

Here's how BLOOM+ increases hair growth potential:

1) Block DHT In Your Hair Follicles

BLOOM+ Uses a key ingredient called "Saw Palmetto", which is a powerful root that has been proven to topically reduce DHT production. This stops DHT from being produced, and allows your hair to grow beyond your genetic hair growth speed.

2) Increase Hair Follicle Bloodflow

BLOOM+ has 3 ingredients proven to increase bloodflow to hair & brow follicles. They are Argan Oil, Black Castor Oil, and Silk Protein. These feed nutrients to follicle faster and more efficiently and allow your follicles to absorb the DHT-Blockers.

3) Extend Your Hair Growth Cycle

BLOOM+ uses 2 key ingredients proven to extend the hair growth cycle. They are Pumpkin Seed Oil and Biotin. These give your hair follicles a longer window to grow, as the average hair growth cycle is usually only 2-3 months before they begin growing much slower.

So, finally, after 8 weeks, I decided to check if I could see results… and I was speechless!

My hairline was filling in, my ponytail was thicker, and my part had HUGE alfalfa hairs sprouting..

I literally had to buy hair gel to hold my new baby hairs down! That's a problem I NEVER expected to have.

I can't wait to do a 3-month update and show you guys the updated results!"

"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

I'm so skeptical about new products.. But this is the trick for anyone with thinning hair. Truly a life saver! - Barb, 40

By week 6 I had alfalfa hairs growing in my part, and a thicker ponytail! my friends even noticed it!! -Melanie, 55