What is the Best Serum for Hair Growth? Reviews and Ratings

There are a lot of hair growth serums on the market today – some work, some don’t and some actually can cause serious side effects if you aren’t careful with the ingredients list. This article is designed to help you make a decision on what hair growth serum is best for you.

What is a Hair Growth Serum?

A hair growth serum is a mixture of oils or liquids with the intention to help hair growth; at least that is how they are marketed to the public.

Some hair growth serums try to provide hair nutrients for hair growth, some try to stop the root cause of hair thinning to prevent further hair fall or hair loss, and some try to artificially enhance hair to make it appear thicker.

Are Serums Good for Hair? and Hair growth?

The answer to this is yes and no – some serums can actually help support hair growth, and possibly regrow hair to an extent depending on your condition – whilst other serums can cause dangerous side effects and even cause hair loss.

How do Serum Work on Hair?

There are many ways a serum will work on hair – one way is artificial enhancement. Many companies do this and this does not actually help hair growth. It only works by expanding the hair shaft for a few hours after application, and makes hair seem thicker. The problem is, this can have serious side effects (see next heading for side effects).

The other way serums work, is by targeting inflammation in the scalp, as well as providing vital nutrients that can pass the walls of the scalp for the hair – this is not always possible, and some companies try to do this, but it does not always work – as some ingredients residue is too large to pass through the epithelial wall.

You have to decide what type of hair density you want – but be aware of side effects as well.

Hair Growth Serum Side Effects

Hair growth serum can have negative side effects if you choose the wrong one – or if you use it incorrectly.

The ones you need to worry about is the hair growth serum that tries to say it grows hair, or helps hair growth, but actually only artificially enhances hair growth – this is because those chemicals can actually increase inflammation in the scalp, and cause hair loss to speed up.

This is why we created our own reviews for hair growth serums, and listed the ones that do not cause this inflammation, and have no negative side effects.


There are various ingredients in hair growth serums from various companies – some do not disclose those, whilst some do due to laws in the country they were produced – some ingredients are great, whilst some are dangerous.

“Essential oils in serum are a big problem, they burn hair follicles – don’t buy serums with essential oils in them”

If the company is not showing ingredients clearly, it does not mean it is a negative thing – some companies need to protect the ingredients, and they cannot make it a patent due to using only natural ingredients (only artificial ingredients can be patented) – so do not think that this will always be a negative – but the good companies will allow you to contact them to ask if it contains an ingredient you may be allergic to – for example, if you are allergic to nuts, you can contact the company and tell them, and they will tell you if this is okay for you or not.

The best thing to make sure – if a serum contains essential oils, and boasts about it – stay away from it – essential oils will burn hair follicles and will prevent hair growth contrary to what everyone seems to say, they are a neurotoxin, and this causes damage to hair growth and increases inflammation – it can also cause headaches.


Hair Growth Serum Reviews

There are so many companies trying to sell a hair growth serum, we decided to review each serum and let you know if this is good for your condition or not – each serum has a target market, and they aren’t all equal, even if they all say hair growth serum, some actually are trying to artificially enhance hair, but not actually grow quality hair or longer hair.

Immortals Oil Review – Rated as the Number 1 Hair Growth Serum/Oil

Website: ImmortalsOil.com

This serum has been reviewed as the most effective serum for hair growth – we will update this post if this changes – all posts on humancure are constantly updated.

Whilst this is not labeled fully as a serum – it does come in the same category as this is a liquid that you apply on the scalp for preventing hair loss, as well as helping new hair growth – it is also for people looking to increase hair growth rate, and increase hair length at a faster rate.

This serum is also great for dry and damaged hair as it focuses on re-building the quality of hair – if you already have good hair, it will produce increase the rate of hair growth speed (so yes, you may complaint you have to go to the hair salon more often).

From the first hand study conducted as well as reviews gathers, this is the number one rated serum for hair growth and preventing hair loss, including increasing hair length at the fastest rate possible – but you need to know how to use it – which means you need to massage in the oil/serum, after application for a few minutes to really get to work.

We liked this aspect of the company – as they offered support to our users who were testing the product.

Well Grow Serum Review – Rated No.2 Hair Growth Serum

This is the next growth serum that we rated as one of the best – although we will always vouch for Immortals oil, the Well Grow Serum is rated highly because they focus also on hair growth and hair stimulation – whilst the results of before and after can vary, and probably depend on each individual trying it, it can possibly help with hair growth or at least providing the best nutrients to hair.

We won’t recommend only using a serum for hair growth however, and that a regime is always needed when you are trying to naturally help hair growth.

Hairgro Serum Review

Whilst the ingredients of this serum do have some history with hair loss and hair growth – this combination and topical application will not get any results in terms of hair growth.

Many companies seem to add a bunch of ingredients known for hair growth, and create a product – they usually rely on the marketing of the ingredient in question, instead of creating a product that works – whilst we aren’t saying that Hairgro Serum did this, but it is worth mentioning this as this is what it looks like.

Cake Hair Growth Serum Review

Cake hair growth serum contains essential oils which will burn hair follicles – so if you actually want to cause hair loss, then please go ahead and buy this – please do stay away from this, as this is probably the most harmful product we have come across in our reviewing history – and the only reason it is mentioned is for the safety of our readers.

Essential oils are often marketed for hair growth – the problem is – it’s a neurotoxin – so whilst it can seem to help in a few applications – regular use will actually cause the opposite effect due to the burning effect of essential oils (even if it is heavily diluted).

Kerastase Hair loss Serum Review

Kerastase hair loss serum is also one of those that target artificial hair growth – which means its not actually trying to keep hair healthy – it’s the opposite, as it contains ingredients in it that will increase inflammation.

People do seem to like the short term effects of Kerastase Serum, but we recommend that if you do use it, don’t use it daily, or too often as this will cause scalp calcification and in turn, hair thinning. You should stick to the top 2 products we mentioned here as there are too many serums out there to review and rate – and most of them have similar ingredients and try to compete by good looking packaging, which actually won’t help solve or help hair thinning.



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