Why is Your Hair So Oily? 5 Causes and How To Treat It

Everyone’s scalp produces a little bit of oil, and it helps make your hair healthier! But to some people, it’s not just a little – it’s a lot. That’s why in their cases, their hair looks and feels very greasy! At some point, it can be troublesome because it makes you look like you haven’t had a hair wash day, but in reality, your scalp just creates more oil than usual as compared to others. Let’s dive deeper into what causes oily scalps and hair and how you can treat it with professional hair care!


How do I know if I have an oily scalp?

If your scalp feels and looks oily 8 to 10 hours after washing your hair, then you may have an oily scalp. Oily scalps would usually feel itchy and would make your hair overly shiny and limp. Plus, if you lean your head on a window and leave oil stains on it, then it’s a sign of an oily scalp. Another sign is when your fingers would feel a bit greasy after running it through your hair.

5 Common Causes of Oily Scalp and Hair

Though there are multiple causes of oily scalps, here are the 5 most common causes:

Hair Type

If you have fine and oily hair, then this doesn’t necessarily mean that your scalp produces way too much oil. Your scalp could produce the normal amount of oil yet make your hair greasy simply because there’s more oil than there is hair to cover. 

On the other hand, if you have thick hair, then you’re also prone to having an oily scalp and hair. Why? With more hair strands, you would have a lot of hair follicles, meaning that you would also have more sebaceous glands. And keep in mind that these glands produce the oil on your scalp! So, ultimately, the more glands you’ve got, the more oil you will produce.


Just like how your facial features have been passed on to you by your mom and dad, both or either of their greasy scalp and hair genes may have been passed down to you as well!

Skin Conditions

Your scalp is also part of your skin, so if you have any skin conditions, then that may also cause the overproduction of oils on your scalp. For example, seborrheic dermatitis, psoriasis, and eczema are a few of the skin conditions that can be associated with the excessive production of oils.


Washing your hair is a must to rid of any dirt and excess oil off of your scalp and hair, but doing it way too often can just damage your scalp and hair. Hair wash products can strip away the natural oils your scalp is producing, so once you’ve overwashed, your scalp and hair will either get too dry or too oily because it’s trying to make up for all the natural oils you’ve stripped away.

Harsh Hair Care Products

Using shampoos and other hair products that contain any harsh ingredients, like artificial chemicals, will only weaken your strands and dry out the scalp. Because of this, your scalp will be trying to produce as much oil as it can to make up for all the oils lost from using harsh hair products. 

How To Treat Oily Scalp and Hair

Having an oily scalp and hair doesn’t mean that you have to start showering more or using fewer hair products – it’s just a matter of using the right hair care products that are specifically formulated to treat oily scalps and strands. Here are a few of our product recommendations for oily scalp care and hair care:

Davines Rebalancing Shampoo (₱ 1,195) 

Davines Rebalancing Shampoo

With ingredients such as burnet extract and cinnamon extract, this sulfate-free and plant-based shampoo can help normalize your scalp’s sebum production. It ensures to cleanse your hair without over-stimulating your scalp’s sebaceous glands! 

Schwarzkopf BC Bonacure Scalp Genesis Purifying Shampoo (₱ 1,400)

Schwarzkopf BC Bonacure Scalp Genesis Purifying Shampoo

This shampoo gently yet effectively cleanses oily and sensitive scalps. While thoroughly cleansing and strengthening the hair, it balances sebum production in the scalp to prevent the appearance of oily roots. 

Kérastase Spécifique Divalent Anti-Oiliness Dual Ritual (₱ 4,950)

Kérastase Spécifique Divalent Anti-Oiliness Dual Ritual

The shampoo from this ritual will purify your scalp to reduce excess oil and odors, while adding volume to your hair, especially to your roots. Not only does it clean your greasy hair, but it also brings life to your limp hair! This ritual also comes with a detox cleanser that can be used weekly to balance sebum levels and invigorate the scalp.

Kérastase Spécifique Potentialiste Serum (₱ 2,950)

Kérastase Spécifique Potentialiste Serum

This is the scalp care you never knew you needed! This all-around serum treats oily scalps and fights against external aggressors that threaten scalp balance. When used daily, it offers immediate cooling comfort, promoting root healthiness and scalp balance over time!

Discover more of our scalp care and hair care products for oily scalps here.

With greasy scalps and hair, using professional hair care is a great way to treat it. For any other hair concerns, send us a message and our HairMNL experts will get back to you!

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