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Hair problem

Very oily hairWhen the scalp produces too much sebum and the hair becomes dull and heavy shortly after washing

Oily hair is one of the most common complaints, especially in adolescence and young adulthood, and it can affect men and women. Sebum is natural and protects the skin; the problem arises when it is produced in excess and the hair sticks to the root, without volume, sometimes only a few hours after washing. Here we explain what regulates this production, what makes it worse, how it differs from dandruff and seborrheic dermatitis, and what the doctor assesses.

Reviewed by Dr Michelle Campagnoli, clinical director

  • 3treatments the clinic may suggest
  • 1assessment consultation, always first
  • 70 €assessment booked through the website
Young woman with shiny dark straight hair, in a green jacket, on a cobbled street with old buildings

How to recognise it

Is it very oily hair?

Hair that is a little greasy after a day or two is normal. We speak of excessive oiliness when the scalp is always the first to complain and the washing routine is not enough. These signs help you work out whether this is your case.

Tick what you recognise0/7

Tick the signs you recognise in your case. This is not a diagnosis, it is only meant to give you an idea.

Intense itching, marked flaking, redness, sores, scalp pain, sudden and heavy hair loss or patches that appear quickly should be seen without delay, as they usually have a cause other than oiliness.

The doctor examining a patient's scalp during a hair assessment consultation
Photograph of an assessment consultation. The dots mark the areas where excess sebum is usually noticed first; the image does not show oily hair.

Why it happens

What weighs on oily hair

Each follicle has a sebaceous gland that lubricates the strand. It is almost never a single thing that regulates its activity. Choose a cause to see what makes it worse and what helps.

Hormones

Androgens stimulate the sebaceous glands, which is why oiliness surges in puberty. Changes in the cycle, pregnancy, the pill, menopause or some hormonal conditions can also affect it. The doctor requests tests only when there is a reason to do so.

What makes it worse

Ignoring other signs, such as irregular cycles, excess body hair or persistent acne, which call for assessment.

What helps

Telling the doctor about changes in your cycle or medication, to understand whether a hormonal factor may be involved.

Only oily or with flaking

Simple oiliness or with inflammation

Not all oily hair is the same. Telling isolated excess sebum apart from a condition with flaking and inflammation determines the approach.

  • What it looks like. The hair becomes greasy quickly, especially at the roots, the scalp looks healthy and there is no itching or flaking.

  • What makes it worse. Hormones, stage of life, sweat, heat, heavy products and habits such as touching your hair or wearing a cap for hours.

  • What tends to help. A washing routine suited to your pace, light products and a review of what ends up on the scalp.

  • Tell us at the consultation. How often you wash, with which products, and at what time of day your hair starts to look greasy.

  • Follow-up. Small, gradual adjustments, with a review if there is no improvement.

Does your hair turn greasy soon after washing? Book an assessment consultation, so that the doctor can understand what lies behind it and what can be done.

Book an assessment consultation

What the clinic can do

Treatments and care for oily hair

Oily hair is treated mainly with a suitable routine and, when there is inflammation, by treating that cause. The injectable and stimulation treatments below do not reduce sebum: they are only considered when there is also hair loss or hair fragility, and the doctor assesses case by case. They act on the scalp and the follicle, that is, on the hair that grows, and do not repair a strand that has already grown. Results vary from person to person and science is still studying these treatments, so the doctor explains what is known and what you can expect before any decision.

Book an assessment consultation
Ampoule of NCTF hair revitalisation and a syringe next to the scalp

Regeneration

Hair NCTF

Vitamins, amino acids, minerals and hyaluronic acid, which may help nourish the scalp and support finer hair.

Suitable when

the hair is finer and the doctor considers scalp nourishment appropriate.

Find out more
A doctor preparing platelet-rich plasma in a syringe, next to a tube of centrifuged blood

Regeneration

Hair PRP

Platelet-rich plasma, obtained from your own blood, which may help stimulate the follicle in some cases. The doctor first assesses whether it is appropriate.

Suitable when

there is associated loss of density and the doctor considers stimulation of the follicle appropriate.

Find out more
Microneedling device next to the scalp, with the hair parted

Stimulation

Hair microneedling

Controlled micro-injuries on the scalp that may help stimulate the area and favour the absorption of other active ingredients. The response is variable and the doctor assesses whether it is appropriate.

Suitable when

the doctor considers it useful to stimulate a weaker area, alone or as a complement.

Find out more

What about the excess sebum itself? When dandruff or seborrheic dermatitis is present, treating the inflammation comes first, for example with medicated shampoos or other prescribed therapy, and the doctor explains the options after examining the scalp. If the hair is simply oily, adjusting the routine is usually the most appropriate step. The decision on any medication is always a medical one.

What the journey looks like

From the first consultation to follow-up

No treatment starts without an assessment consultation with the doctor. This is how it works.

  1. 01At the clinic

    A conversation about your routine

    The doctor asks how long the hair has been oily, how often you wash, with which products, which caps or helmets you wear, whether you play sport and whether there have been hormonal, medication or stress changes.

  2. 02At the clinic

    Examining the scalp

    She examines the skin and the hairs, often with trichoscopy, to tell simple oiliness apart from flaking, inflammation or another cause, and to see whether there is associated hair loss.

  3. 03At the clinic

    See what may be behind it

    If there are signs of a hormonal cause, seborrheic dermatitis or another condition, the doctor explains what it may be useful to investigate, including blood tests, and when.

  4. 04At home

    A tailored routine

    Together with you, the doctor agrees a realistic washing routine, with products suited to your hair type, and indicates what to avoid.

  5. 05Over time

    Follow-up

    The doctor examines the scalp again after some time to adjust the plan, and proposes one of the treatments above only if there is associated hair loss or fragility.

Day to day

What helps at home

A simple, consistent routine is worth more than many products. These are the care steps that matter most, and the most common mistakes.

The golden rule

Wash when the scalp asks for it, without guilt

There is no right number of washes. People with oily hair can wash daily, if that is what makes them feel good, with a gentle, well-rinsed shampoo. What matters is gentleness, not the calendar.

Wash gently

Scrubbing hard irritates and does not remove more sebum.

In practice: massage the scalp with your fingertips, not your nails, and use lukewarm rather than hot water.

Rinse very thoroughly

Shampoo residue builds up and makes the hair look dirty.

In practice: let the water run for longer than seems necessary, especially at the nape and behind the ears.

Conditioner only on the ends

At the root, it makes oily hair heavier.

In practice: apply from mid-length downwards and avoid the scalp.

Wash what touches your hair

Caps, helmets, brushes, pillowcases and towels transfer grease back again.

In practice: wash brushes, pillowcases and the inside of your cap or helmet regularly.

Rinse off sweat

After training, sweat dries together with the sebum at the root.

In practice: if you cannot wash, rinse with water and dry well, and wash after exercise whenever possible.

Dr Michelle Campagnoli, clinical director of Clínica Luxmed

Who will look after you

An assessment carried out by the doctor

At Luxmed, the first step is always an assessment consultation with Dra. Michelle Campagnoli. She looks for what lies behind the oiliness, distinguishes it from dandruff or seborrheic dermatitis and designs the plan with you.

  • Physical examination and medical historyAssessment of the scalp, of the washing routine and of the medication you take.
  • A plan tailored to youA plan suited to your case, clearly explained, with follow-up over time.
  • No obligationThe cost of any treatment is confirmed only after the assessment.
Book an assessment consultation

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Choose how you prefer to get in touch. We will arrange the assessment consultation with Dr Michelle Campagnoli.

Booking through the website100€70€Assessment consultationExclusive price for those who book the assessment through the website. Outside the website, the price is 100 €.

New Life Miraflores, Algés · Office Center, R. Santa Teresa do Menino Jesus n.º 6, 9.º C, 1495-048

Your details are used only for this contact. Any treatment depends on a prior medical assessment.

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Why does my hair get oily so quickly?

Each follicle has a sebaceous gland, and some are more active than others, for hormonal and hereditary reasons. Sebum travels down the strand from the root, and straight, fine hair shows it more quickly than curly hair. Sweat, heat, wearing a cap and hands in the hair speed up the effect. The doctor helps to work out what weighs most in your case.

Does washing every day make oily hair worse?

It has not been shown to make it worse. The American Academy of Dermatology accepts daily washing in people with an oily scalp and straight hair. The idea that the scalp "compensates" by producing more sebum has limited evidence. If washing every day makes you feel good and the scalp is not irritated, you do not need to force yourself to space it out. If it irritates, change shampoo or speak to the doctor.

Does washing less often teach the hair to produce less sebum?

It is a much-repeated idea, but the evidence is limited, and those who repeat it tend to forget that each person has a different balance point. What happens when washes are spaced out too much is that sebum, sweat and products build up, and the skin may become irritated. Trying to go from daily washes to twice a week overnight is usually uncomfortable. If you want to space them out, do it gradually and see how your scalp reacts; it is not compulsory.

Is oily hair the same as dandruff or seborrheic dermatitis?

No. Oily hair is excess sebum. Dandruff and seborrheic dermatitis are a spectrum of scalp inflammation in which sebum and a fungus that lives on the skin play a part, and which shows as flakes and itching, with or without redness. They can occur together, but this is not necessarily so. The distinction is made by examining the scalp, because the treatment is different.

Is oily hair a sign of a hormonal problem?

Not always. Oiliness is normal in puberty and varies throughout life, and genetics counts for a lot. But if it appears suddenly, or comes with irregular cycles, persistent acne or excess body hair, it is worth speaking to the doctor, who may suggest tests if she considers them useful. Do not have tests done or take hormonal supplements on your own, because the result only makes sense when read in the context of your whole case.

Does stress make hair oilier?

It may play a role. Stress activates hormonal pathways that affect the sebaceous cells, and many people notice more oiliness during periods of pressure or little sleep. It is not the same for everyone, and it is hard to prove in an individual case, so the explanation "it's stress" should be confirmed with the doctor and not assumed. If oiliness appears together with hair loss, the doctor assesses both together and checks whether another factor, such as deficiencies or hormonal changes, may be contributing.

Can I use anti-dandruff shampoo if my hair is only oily?

You can, but it is not always necessary. For an oily scalp with dandruff, the American Academy of Dermatology suggests an anti-dandruff shampoo a few times a week, alternated with a gentle one. If there are no flakes or itching, a gentle shampoo is usually enough. Anti-dandruff shampoos can dry out the ends, especially in long hair, so apply them mainly to the scalp and ask the doctor for advice if you have doubts.

Does wearing a cap or helmet make oily hair worse?

It does not damage it, but it may worsen the sensation. The head warms up, sweat is trapped and there is friction at the roots, so the hair flattens and looks greasy more quickly. If you wear a helmet every day, have a washable liner, rinse off sweat whenever possible and wash the cap or helmet regularly. If spots, itching or hair loss appear where the accessory sits, show the doctor.

Does oily hair cause hair loss?

On its own, it has not been established that it causes hair loss. However, oiliness, flaking and hair loss can coexist, for example in seborrheic dermatitis, and scalp inflammation may contribute to losing more hair, which usually improves when the inflammation is treated. If you notice more hair falling out, do not assume it is due to oiliness: the doctor assesses the possible causes, such as hormones, deficiencies or stress.

Do "pH-balanced" shampoos or oils solve it?

A gentle shampoo is a good choice, but the pH on the label does not decide the result. As for oils and "natural" products, applied to the roots they may worsen oiliness and cause irritation. A good rule is to try one product at a time for a while, rather than mixing several, and to go back if the scalp becomes irritated. If there is no improvement with a simple routine, medical assessment is the next step.

What treatments does the clinic offer for oily hair?

Oily hair is treated mainly with an adjusted routine and, where there is inflammation, by treating that cause, which the doctor defines after examining the scalp. Regenerative treatments, such as NCTF, PRP and microneedling, do not reduce sebum; they are only considered if there is also hair loss or fragility. None is decided before the consultation, and the doctor always explains what is known and what you can expect.

Do I need blood tests?

Not always. If the oiliness is isolated and there are no other signs, the doctor may not request any, and the routine and examination of the scalp may be enough. If there are irregular cycles, persistent acne, excess body hair, hair loss or another sign, she may suggest hormonal or other tests. The aim is to understand whether there is a cause to treat, not to run tests for the sake of it; for this reason it is important to tell the doctor everything that has changed, including medication, cycle and weight.

When should I book a consultation?

If the oiliness bothers you and your routine is not enough, if there is itching, flakes, redness or spots on the scalp, or if you notice more hair falling out. Pain, sores, marked flaking, intense redness, sudden hair loss or patches that appear quickly should be seen without delay, as they usually have another cause. At the appointment, bring the list of products you use and tell the doctor how often you wash your hair.

Will it go away with age?

In many people oiliness decreases over the years, but this is not a rule, and it depends on hormones and genetics. Many people notice that the scalp becomes less oily with age, but some stay the same for life. If you start to see flakes, it may also be a sign that washing is becoming insufficient or that there is flaking to be assessed. If the discomfort is present now, there is no need to wait: a routine and an assessment can help from the start.

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Scientific references

This page is based on the sources below and was reviewed by Dr. Michelle Campagnoli. Last updated on .

  1. Mosca S, Ottaviani M, Briganti S, Di Nardo A, Flori E. The Sebaceous Gland: A Key Player in the Balance Between Homeostasis and Inflammatory Skin Diseases. Cells, 2025.
  2. Li J, Mao B, Tang X, Zhang Q, Zhao J, Zhang H, Chen W, Cui S. Endocrine and metabolic drivers of sebum dysregulation: Mechanisms and therapeutic strategies. Life Sciences, 2025.
  3. Borda LJ, Wikramanayake TC. Seborrheic Dermatitis and Dandruff: A Comprehensive Review. Journal of Clinical and Investigative Dermatology, 2015.
  4. DermNet (New Zealand). Seborrhoeic dermatitis: Causes and treatment. (DermNet, acedido 2026-11-11)
  5. American Academy of Dermatology Association. How to treat dandruff. (American Academy of Dermatology (aad.org), acedido 2026-11-11)
  6. American Academy of Dermatology Association. Tips for healthy hair. (American Academy of Dermatology (aad.org), acedido 2026-11-11)
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