Thick and coarse hair: causes and care

The presence of thick and coarse hair is a more common condition than it seems. But do you know what they are? They are known as scab hair in English And we are not facing a scientific term, but it is the name given to these hairs that are different, unwanted and with a different appearance from the rest.

Read on and learn much more about thick and coarse hair, its causes and its care in detail.

How are thick and coarse hair?

Coarse, coarse hair looks like kinky wire. They make a great difference in appearance with respect to the rest of the existing hairs on the scalp. In this case, they tend to be darker and frizzy, which is why they resemble pubic hair and their condition is associated with hormonal problems or chemical treatments.

The disorder can also be referred to as hair curling when it is present in larger areas of the skull. According to the scientific article published by the Spanish Academy of Dermatology and Venereology, it is a rare disorder with low frequency in the population.

Why does thick and coarse hair come out?

This problem of scab hair occurs, above all, when the hair is subjected to different external chemical agents, such as the use and application of relaxers and relaxers. These products damage the scalp and consequently present unwanted hair in the form of a wire.

On the other hand, kinks are associated with causes related to hormones, stress, genetics, and nutritional deficiencies.


Cases associated with stress are sporadic, although once they appear they can last a long time. According to an investigation by the Technical University of Babahoyo, their presence depends on stress levels and the frequency with which it is experienced.

Stressful situations can trigger kinky hair if they last for a long time, as with female students.

Bad nutrition

If the body is not fed properly, there are deficiencies, especially vitamins and proteins. Then, certain deficiencies arise and the hair kinks. Various investigations indicate that a good nutrition and adequate hydration are the allies to protect and care for the hair.

Foods with a significant presence of iron, zinc, folic acid, sulfur amino acids and cyanocobalamin (vitamin B12) are essential in the daily diet.

Abusing the use of chemicals

This is one of the main causes of the appearance of thick and coarse hair. The constant or sporadic use of chemical treatments on the hair tends to affect the hair follicles. Consequently, hairs with these characteristics originate, with a different appearance from the rest.

Keep reading: The best way to bleach your hair without damaging it

Dermatological problems

Some dermatological problems also influence the appearance of these thick and coarse hair, such as seborrheic dermatitis, which affects areas rich in sebaceous glands. This condition has as root causes to environmental factors in combination with allergies and genetic predisposition.

Tension, worries and stress, meanwhile, are situations that enhance sebum production, as well as colonization by fungi. In this way, excess fat leads to inflammation and flaking.

Genetic factors

According to research published in Hum Genet, the TCHH gene is involved in the appearance of curly hair. In the same way, the degree of curl is correlated with the keratin of the hair and the cells present within the hair fiber.

So genetic factors determine the appearance of thick and coarse hair, which appears naturally. That is, they are part of the inheritance received from each person.

What can I avoid thick and coarse hair?

To avoid and minimize thick and coarse hair, it is important that you start by considering the following aspects:

  • Apply oilsUsing natural oils, according to various research, can help improve this condition. A few drops of argan, jojoba or almond oil on these hairs facilitate a change in appearance in unruly hairs. They are also very convenient for massaging the scalp and activating the follicles.
  • Use an appropriate shampoo and conditioner: using a good shampoo and conditioner, which provide softness to the hair and help keep it clean and healthy is the perfect combination to minimize or hide this type of condition. It is important to consider that they are free of harmful chemicals.
  • Apply moisturizers: the use of moisturizers with natural products also helps to nourish the hair and give it the softness it requires.

Daily hair care is key to avoiding your disease, which means choosing the right products.

Discover: How to prepare a homemade shampoo for each type of hair

Some more tips for thick and coarse hair

If you are looking for options to minimize the appearance of coarse and coarse hair, it is also important that you consider the following:

  • Do not overdo the use of chemical treatments on the hair.
  • Eat a balanced diet and with all the nutrients your body needs.
  • Make sure of use a good shampoo and conditioner. In addition to a good moisturizer.
  • If you want to hide them, since they are obvious, apply some hairspray on them and comb them carefully.
  • A proper haircut can also help disguise volume. and it can make them more docile, manageable and easy to style.

Control chemicals

The effect of coarse and coarse hairs is an unwanted appearance, so it is always useful to consider the advice suggested here. It is also important that you take into account the various factors that can intervene in the appearance of these hairs.

Genetics, diet, stress, some dermatological problems and the use of excess chemicals on the hair are decisive. You can regulate and control this last condition to minimize unwanted effects.