7 Best Hair Growth Serums: 2018 Reviews & Guide

Updated 6 years ago

If you want to grow thicker and fuller hair, there are many solutions that are available, each with varying levels of effectiveness. For instance, there are shampoos and supplements with ingredients that improve the health of the hair. There are also modern laser devices that trigger hair growth. If you want a simpler and more cost-effective alternative, hair serums can be promising.

In the rest of this buying guide, we will discuss some of the top choices for the best hair growth serum. This will help you to make the right decision and be provided with the best value for your money. The options can be endless, but this should not be an excuse for you to make a purchase decision in haste.

What is Hair Serum and How Does it Work?

A serum is one of the most popular hair care products these days. It has the primary purpose of transforming dry and frizzy hair to smooth and shiny. In a nutshell, if you want to add life to your boring hair, a serum will offer the perfect solution. This product is silicone-based. When applied, this will provide a coating on the surface of your hair.

The main difference between a hair oil and hair serum is that the oil penetrates deep into the cuticles of the hair, while the serum coats only the surface. It offers protection from external elements, such as sun and pollution that can damage the hair.

Hair serums can also be effective for hair growth. It works through stimulation of the blood that flows from the scalp. It brings back to life the dormant or dead hair follicles. For the best outcomes, you need to make sure that it has the right ingredients. Among others, menthol is one of the best to have as it can invigorate the scalp.

Top Hair Growth Serums on the Market

Here are some of the top products that are available on the market and some of the things that can convince you to have then chosen over their competitors.

Product Name Main Ingredients Price
Ultrax Labs Hair Plush Serum Caffeine, hydrolyzed keratin, biotin $$
Amplixin Intensive Hair Growth Serum Biotin, caffeine, aloe vera, calendula $$
HairGenics Pronexa Topical Hair Growth Serum Pea sprout extract, citric acid, purified water $$
Castor Oil Organic Hair Serum Organic castor oil $
Golden Reason Pure Coconut Hair Growth Serum Pure coconut oil $
Nourish Beaute Hair Loss Treatment and Growth Serum Argan oil, coconut oil, apple cider vinegar, saw palmetto $$
Grow Gorgeous Hair Density Serum Castor oil, pea sprout complex, wheat sprout, soy sprout $$

Ultrax Labs Hair Plush Serum

Among others, caffeine is one of the most important ingredients in this hair serum, which is also the one that is mostly responsible for its effectiveness. The transdermal application of caffeine, as shown in clinical studies, is effective in the stimulation of the follicles and in encouraging hair growth.

The serum also contains hydrolyzed keratin. It improves the natural protective layer of the skin, offering protection from harsh elements, such as the heat of the sun and pollution. It also makes the hair thicker by coating the shaft.

Lastly, there is also biotin in this hair serum. Through its topical application, biotin makes each strand of hair stronger and less prone to breakage.

Amplixin Intensive Hair Growth Serum

One of the many good things about this hair serum is that it makes use of organic oils and natural ingredients that can stimulate hair growth without worrying about side effects. Aside from biotin, other ingredients that are used in this serum include caffeine, aloe vera, and calendula.

To make it even a better option, the serum does not contain sulfate and parabens. This can make you more confident that it is safe for your hair and will not cause irritation.

If you are still not convinced that this is a great choice for a hair serum, it is also good to know that this is a doctor-approved serum, so there is nothing that you should be worried about.

HairGenics Pronexa Topical Hair Growth Serum

This serum has a patented ingredient that will help in growing thicker and fuller hair. This ingredient is the topical pea sprout extract. The effect of this ingredient is similar to what you can expect from minoxidil. It is 100% natural and the serum does not contain any harsh chemicals.

While using the serum can be effective on its own, for the best outcomes, it will also be best to use hair growth supplement, hair strengthening shampoo, and hair thickening conditioner from the same company.

Lastly, the manufacturer is also offering a money-back guarantee, which will provide an assurance of your satisfaction. If you are unhappy with the results of its use, return the serum to the manufacturer and they will issue an unconditional refund.

Castor Oil Organic Hair Serum

This hair serum is 100% certified organic, which will provide you with an assurance that there are no adverse effects associated with its use. The only ingredient that is used in this product is organic castor oil. It is cold-pressed and can be easily absorbed by the hair and scalp. It is also a natural moisturizer, which makes it great for the skin.

Aside from growing thicker and beautiful hair, this serum is also great if you want to have bold eyebrows and long eyelashes. The kit comes with an applicator to make its use easier.

More so, the company takes pride in having a manufacturing facility in California that adheres to the highest global standards.

Golden Reason Pure Coconut Hair Growth Serum

This hair serum is made from 100% pure coconut oil. The latter comes with anti-bacterial and anti-fungal properties. It will offer protection from lice and dandruff, among other things that can damage your hair. Because of this protective element, it is effective in encouraging hair growth.

Coconut oil contains Vitamin E, Vitamin K, carbohydrates, and essential minerals that are effective for making the hair healthier.

Lastly, to make you more confident that this product is reflective of the highest quality, take note that it is made in an FDA-approved facility. This means that it adheres to the highest global production standards.

Nourish Beaute Hair Loss Treatment and Growth Serum

To stop hair loss and speed up hair growth, this serum can deliver a high level of effectiveness. It has a patented stem cell technology, which is one of the reasons why it is favored by many people. It is made from natural and safe ingredients, including DHT blockers, to inhibit hormones that are responsible for hair loss.

This product is clinically-tested, which means that the effectiveness is proven and not just based on baseless claims. Within an 84-day period of its use, there is significantly less thinning and faster regrowth amongst the participants.

Lastly, if the product does not work and if you are unhappy with the results, you can return the serum to the manufacturer and they will issue a refund.

Grow Gorgeous Hair Density Serum

For visibly thicker and longer hair, this is another option that should be included in your list of choices for the best serum. It features seven key technologies, which are responsible for delivering the anticipated outcomes.

It contains Clover Flower Extract Active Complex and Acetyl Tetrapeptide-3, which can improve the length of your hair. Meanwhile, hyaluronic acid provides a moisturizing effect on the scalp, which can encourage hair growth. It also has caffeine, which invigorates dormant hair follicles.

This is an ultra-concentrated serum. With a high density of the ingredients that are used, you can be more confident that it will indeed work to promote hair growth.


In sum, a serum can indeed be effective for hair growth. It invigorates the scalp and stimulates blood flow to revive dead or dormant follicles. The best thing is that aside from encouraging hair to grow, it also provides it with a beautiful shine while offering protection from external elements that can lead to serious damage.