7 Best Fast Hair Growth Serum: Ranked & Reviewed

Medically reviewedby Dr. Amy Revene M.B.B.S.
WrittenbyLuat Duong
Last updated

Looking for a way to kick-start your hair growth journey? Discover the magic of fast hair growth serum and learn how it can transform your mane from lackluster to lush in no time. 

Whether you're battling thinning hair or just impatient for longer locks, this guide will help you understand how these serums work and which ones might be right for you.

What is a fast hair growth serum?

A fast hair growth serum is a specially formulated product designed to stimulate hair follicles, encourage faster and denser hair growth, and improve the overall health of the scalp and hair. Typically, these serums contain active ingredients like biotin, peptides, and various plant extracts known to boost hair growth.

Expanding on this, fast hair growth serums are not just about speeding up hair growth; they're about creating a healthier environment for hair to thrive. 

Many serums work by nourishing the scalp, correcting nutrient deficiencies that may be slowing down hair growth. 

They often aim to improve blood circulation to the scalp, which helps to deliver more nutrients and oxygen to hair follicles, strengthening them and reducing hair loss.

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How does fast hair growth serum work?

Fast hair growth serums work by targeting the underlying issues that cause slow hair growth and hair thinning. These serums typically contain a mix of growth-stimulating and follicle-nourishing ingredients that work together to enhance hair health.

To delve a bit deeper, the effectiveness of these serums often hinges on their ability to nourish the scalp and fortify the hair follicles. 

For instance, ingredients like minoxidil widen blood vessels and increase blood flow to the areas they're applied, which enhances the nutrient supply to the hair follicles. 

Other common ingredients, such as antioxidants and amino acids, protect against damage and provide the necessary building blocks for new hair growth. 

This multifaceted approach ensures that not only does hair grow faster, but it also becomes thicker, stronger, and healthier.

What is the best fast hair growth serum?

Here are some of the best fast hair growth serums:

  1. Bio-Pilixin Activation Serum
  2. Kérastase Initialiste Scalp & Hair Serum
  3. Sephora Collection Strengthening Hair Serum With Biotin and Phytoproteins
  4. Rene Furterer Hair Serum
  5. Briogeo Destined for Density Megastrength+ Peptide Density Serum
  6. The Nue Co. Supa Thick Scalp Serum
  7. Vegamour Gro Hair Serum

1. Bio-Pilixin Activation Serum

fast hair growth serum

Looking for a breakthrough in your battle against hair thinning? Bio-Pilixin Activation Serum might just be your new go-to solution. 

Developed by hair care experts using advanced stem cell technology, this serum is packed with plant growth factors specifically chosen to nurture your hair follicles and boost hair growth.

It’s a safe, drug-free formula that you can use daily without a second thought. One of the most encouraging aspects of Bio-Pilixin® Serum is the speed and effectiveness with which it starts to show results. In a clinical study, a remarkable 77% of participants noticed a reduction in hair loss in just 45 days. 

Furthermore, by the end of the 150-day study period, 73% of users reported a measurable increase in hair density. This isn't just hopeful statistics—it's real people getting real results.

The science behind Bio-Pilixin is supported by clinical trials involving men and women of various ages and hair loss types. 

These studies aren’t just numbers; they represent a significant step forward in understanding and combating hair loss. An interesting tidbit many users report is noticing less hair falling out during showers within just a few weeks of starting the treatment.

We're so confident in the effectiveness of our product that we offer a 150-day money-back guarantee. If you're not satisfied with your results after giving it a proper try, we've got you covered. 

It's our way of ensuring that you feel as secure in our product as we do. Try Bio-Pilixin Serum and see if it can bring back the fuller, healthier hair you remember.

Bio-Pilixin® Activation Serum | For Men
Bio-Pilixin® Activation Serum | For Men
Drug-free & clinically tested

2. Kérastase Initialiste Scalp & Hair Serum

fast hair growth serum

Kérastase's formula skips the common minoxidil and opts for a blend of SP94, ceramides, conditioners, and green tea extract. 

Our experience? It's a game changer for thin, fine hair. After six weeks of nightly application—yes, it takes three droppers each time—the changes were not just visible but impressive. 

Thicker hair, denser patches where hair seemed to have given up, all without feeling heavy or sticky.

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3. Sephora Collection Strengthening Hair Serum With Biotin and Phytoproteins

sephora hair serum


This wallet-friendly choice impresses with its plant-based protein and biotin formula. It's incredibly light, sinking into the scalp almost instantly, which means you might need a few droppers to cover your whole head. 

Stick with it nightly, and you'll notice fuller hairlines come morning. It might not elongate your locks, but it definitely amps up the health and volume of what you've got.

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4. Rene Furterer Hair Serum

rene fast hair growth serum

Infused with plant ingredients like lemon essential oil, this serum not only stimulates the scalp but smells refreshingly citrusy. The practical packaging—disposable vials with a narrow nozzle—makes application a breeze once a week. 

Within three months, expect to see a fuller, thicker head of hair that feels stronger from root to tip.

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5. Briogeo Destined for Density Megastrength+ Peptide Density Serum

fast hair growth serum

Don't let the orange tint fool you—this serum is anything but greasy. Its light texture is perfect for fine hair, absorbing in just 30 seconds. 

With daily use, even just over six weeks, it significantly improved the density of our hair, especially along problematic hairlines. It's a keep-on-the-vanity kind of product.

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6. The Nue co. Supa Thick Scalp Serum

The Nue co. Supa Thick Scalp Serum

For those who enjoy a bit of self-care with their scalp treatments, this serum is a standout with its rosemary scent. It targets the hair follicles with a mix of prebiotics and probiotics, helping to thicken hair and reduce shedding. 

Applied two to three times a week, it's a treat that delivers fuller hair without the heavy feel.

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7. Vegamour Gro Hair Serum


Packing unique ingredients like mung bean and red clover, this serum tackles hair density like a pro. 

Vegamour claims up to a 50% increase in density and a significant reduction in shedding after four months of use. If you're battling hair thinning, this might just be your new best friend.

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How to choose the best fast hair growth serum?

Here's how to pick a serum that's effective and right for your hair type.

Understand your hair and scalp needs

Before you shop, think about what your hair really needs. Is your hair fine and oily, thick and dry, or somewhere in between? Do you have a sensitive scalp? Products catering to your specific hair type will yield the best results. 

For instance, if you struggle with an oily scalp, look for a serum that's lightweight and non-greasy.

Check the ingredients

The effectiveness of a hair growth serum largely depends on its active ingredients. Look for key components known to stimulate hair growth such as biotin, caffeine, and natural extracts like ginseng and saw palmetto. 

Avoid products with too many harsh chemicals that can irritate your scalp or damage your hair.

Read reviews and testimonials

What better way to gauge a product's effectiveness than hearing from those who've tried it? Look for reviews that address long-term use and note both improvements in hair growth and any side effects. 

Reviews can provide insights that aren't obvious from the product description alone.

Consider your budget

While it's tempting to think the most expensive option is the best, that’s not always the case. Determine what you’re willing to spend and find the best product within your budget. 

Remember, consistency is key for seeing results, so ensure you can afford to keep buying the serum.


In conclusion, finding the best fast hair growth serum involves understanding your specific hair and scalp needs, checking for key nourishing ingredients, reading honest reviews, and considering your budget. 

By taking these steps, you can select a serum that not only promotes faster hair growth but also improves the overall health and appearance of your hair. 

Remember, the right serum is out there for everyone—it's just a matter of finding the one that works best for you.


Does serum grow hair faster?

Yes, scientific evidence supports that hair growth serums effectively reduce hair thinning and promote new hair growth. These products nourish the scalp and hair follicles, leading to stronger, thicker, and healthier-looking hair.

How to grow hair fast?

To promote faster hair growth, focus on a protein-rich diet, use caffeine-infused hair products, avoid harsh chemicals like permanent dyes, and try to manage stress effectively. Remember, healthy hair starts from the inside out and involves taking care of your overall wellbeing.

How can I regrow my hair in 3 weeks?

Regrowing hair naturally in just three weeks is challenging, but possible with the right approach. Increase your protein intake, perform daily scalp massages to stimulate blood flow, minimize heat styling, and ensure you're hydrated by drinking plenty of water. These steps can help accelerate hair growth.


  1. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7522433/
  2. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6380979/
  3. https://pubmed.ncbi.nlm.nih.gov/33061509/
  4. https://www.ncbi.nlm.nih.gov/books/NBK278957/
  5. https://www.sciencedaily.com/news/health_medicine/hair_loss/
Luat Duong

Luat Duong is a Copenhagen-based writer and content strategist specializing in hair loss and health. His work has been featured in MyHealthGuide, The Right Hairstyles, and Woman's Era. He is a graduate of Vaasa University. You can connect with him on LinkedIn.