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Is Greasy Hair Bad? [Everything You Need To Know]

Is Greasy Hair Bad

You may have a lot of doubts about having oily hair. Especially, if greasy hair is bad.

Maybe it’s because you’ve always had this problem or because your hair has been getting dirty very quickly lately.

The truth is that greasy hair can be bad because if not taken care of it can lead to scalp complications such as dandruff, build-up, itchiness or even hair loss. The scalp is the one that is affected the most because it is the one that is in contact with the oils all the time.

It is also important you know that there are solutions and ways to prevent it.

That is why you must know them.

More important than knowing them is to apply them to help you see the positive results.

Having greasy hair Is bad?

If you have oily hair you might be wondering hair in what way can it be harmful?

The way a greasy scalp is bad because it creates an imbalance in the scalp.

Scalp hair has to be balanced just like the hair on the scalp or other areas.

Specifically, on the head, we have to produce certain lubricants to avoid infections and to protect from external agents such as dust, sun and others.

When the balance of the scalp is disturbed with more oils for example it can cause things like dandruff. It can take on more damaging forms such as seborrhea, which if not properly removed can also cause pore clogging.

That’s why knowing in what ways it can be bad will help you avoid complications.

Why is greasy hair bad?

Why greasy hair Is bad

The main reason why having greasy hair is bad is that it can cause other scalp problems and complications.

It doesn’t mean that you will always get these problems from having oily skin. However, if left unattended it can get worse.

That’s why if you know what can happen because of greasy hair you can avoid it and fix it as soon as possible.

Having greasy hair is bad because it leads to this scalp problems:

  1. Build-up
  2. An itchy scalp
  3. Dandruff
  4. Hair loss

These complications are much more difficult to fix, and that’s why if you know how they relate to the oily part of your hair you can correct and make your scalp go back to normal. Let’s see each one of them individually:

#1 White Build-Up

White Build-Up

The reason why greasy hair is bad is because you generate too much oil that you don’t need. This can be because you produce it naturally, or because there is a lack of proper cleansing when you wash your hair.

Generating oils is not the problem, the problem is over-producing them.

Our body needs us to produce oils in the scalp to keep the skin healthy, protected and moisturized. However, when there is more than it needs, it starts to accumulate and form white build-up in scalp.

When this happens and the oils are not removed, they start to form layers of residue and these are the very famous build-up layers.

A graphic way to represent them in your mind is to imagine a layer cake with layers of flavours or a sandwich with layers of ingredients.

The problem with these build-up layers is that they harden and create problems that can become serious scalp problems.

In addition to this, the pores become clogged and this leads to other problems as well.

That is why it is so important to have a very effective cleansing routine so that this does not happen to you.

How to remove build up

To remove the build up from your hair, the best thing to do is to use a specific exfoliant on your scalp once every fortnight.

Exfoliating your scalp will help a lot to remove that layer of white residue from your scalp.

I recommend using Kerastase’s Fusio Scrub, as it is a product that will not only remove the build-up layer, but will also help balance the oiliness of your scalp.

#2 an Itchy scalp

Woman with itchy scalp

It is very common that greasy hair causes an itchy scalp because of the accumulation of oils and residue build-up.

This is why an itchy scalp is so closely connected to a white build-up.

The build-up comes from the accumulation of oils that our body produces plus those in the products we use.

Glycerin and oils in shampoo and some styling products can contribute to this.

Oils are the main cause of itching. If you’re wondering why, it’s because when the nerve endings in your scalp come in contact with them, they react.

The reaction the skin has is to itch.

If you stop and think for a moment you can confirm that this happens.

When you start to have your scalp unwashed for a few days, you start to see more oils by the way it looks.

What happens after this is that you will itch and scratch your head more often.

This is totally normal and from what I tell you is a natural reaction of the body.

Unfortunately having an itchy scalp can be bad because besides being uncomfortable it can hurt you or get complicated.

It depends on the sensitivity of the skin but regularly itchy scalp makes you scratch and if you do it too hard and too often it can irritate the skin.

Fix it

To avoid this type of itching problem I highly recommend that you make sure you clean your hair well when you wash it.

The right way to do this is to make sure that your shampoo has the right technology and formula to remove the residues that we produce every day.

This is what keeps your scalp from getting built up.

If you clean it well every time you wash it, it will be very easy to avoid build-up.

My professional suggestion for you to remove all the residues very well is to use Kerastase Bain Divalent which is a shampoo that can fulfil the objective of deep cleansing very well.

It is a product that I recommend to different types of clients and it has worked very well for every one of them.

I hope it can work for you too.

#3 Dandruff

Dandruff caused for greasy hair

Dandruff is another related scalp problem. The truth is that oily hair can cause dandruff because of the accumulation of greasiness in the scalp.

This type of dandruff looks like big sticky flakes in a yellowish color, and it’s caused by an imbalance in the scalp.

That’s why if you touch your scalp you can shed dandruff flakes that we start to see everywhere and can be very uncomfortable. The scalp skin can also feel sticky, which is quite unpleasant!

It all comes because the natural environment of the scalp is changed and the skin reacts to the oils.

Another type of dandruff that can appear in greasy hair is a specific one that comes from a fungus that most adults have called the fungi Malassezia.

That is this fungus that causes dandruff in most cases because it generates dandruff when a favorable environment triggers it.


The best way to avoid dandruff is to keep your scalp clean and not abuse styling products like hair sprays or gel.

Preventing it from happening is the best thing you can do to avoid the problems it brings.

Cleansing is what will help you to avoid the build-up of residues and oils and this will help to avoid build-up.

This way you will avoid creating a hardening layer that will change the chemistry of the scalp skin and cause it to react with dandruff.

My professional recommendation is to use a special shampoo to control the dandruff and excess of oils like the Anti- Pelliculare Kerastase Shampoo.

This is a shampoo that does an incredible job of keeping your skin balanced and in a few washes you will start to feel your scalp much better.

#4 Hair loss

A woman with Hair Loss

When your scalp cannot breathe because of the excess of oils, you can develop hair loss problems because oily hair causes hair loss.

Traditional hair loss occurs in the hair follicle as it sheds when the growth cycle ends. All of our hair is renewed from time to time.

Most commonly, a hair spends at least 4 years in a growth phase. When this phase ends, there is a resting phase and then the shedding phase.

When something disturbs the natural functioning of the growth phase, problems such as premature shedding or thinning of the follicle can occur.

If we allow a follicle to continually thin without strengthening it, it can stop producing new hair.

That is the worst terror because if you lose hair and it doesn’t grow any more that’s when baldness occurs.

It depends a lot on the care and attention you give to avoid this. The important thing to know is that it can be prevented with specific actions and continuous monitoring.

How to stop it

To keep your hair from falling out you must avoid clogging the pores of your hair.

To achieve this you must keep the scalp skin clean and detoxed.

Removing the layers of residue and greasiness that has hardened in our scalp is the key to getting the pores to breathe again.

With this oxygenation, massage and water, hair loss can be prevented.

It may not happen in just one application but if you do it every 15 days at least 4 times you will feel your skin much better.

My professional suggestion is that once a month you do a detox with a special scalp scrub, and that you use regularly a cleansing shampoo to make sure your scalp is always clean and unclogged.

Bottom Line

The problems that can be caused by greasy hair can start simple and become more complicated.

We should not underestimate the importance of oil in our hair, on the contrary. The scalp needs a specific balance and checking for excess oils is essential.

If you don’t take care of it and fix it when you produce excess oils you can end up with hair loss. Also, other scalp conditions such as dandruff or seborrhea.

All of the problems that develop are due to changing the scalp environment and balance.

If you follow the tips I have given you here you can prevent this from happening to you.

Monitoring and regulating your scalp oil will keep your scalp looking clean and healthy.

Until next time.