To draw a parallel with nature and use a simple metaphor, we can think of hair as a stem rooted in the scalp. The scalp is essential for healthy hair.
In fact, it's through the roots that hair regenerates. Too much sebum, and the sebaceous glands are too active and need to be regulated. Too much stress, and it's the irrigation that can go wrong if the scalpskin is too "taut" and not supple enough. The result is an irritated scalp. The scalp is home to an important bacterial flora: the microbiota. It forms an ecosystem whose balance needs to be respected, thanks to the right irritated scalp shampoo that stays healthy.
Have you noticed that you're constantly scratching your head? Then you may be suffering from scalp irritation, which can be linked to a scalp disease or a reaction after using the wrong shampoo. It may also be accompanied by dandruff (dry or oily). Whether you have an oily or dry scalp, don't worry, we'll help you find the cause of your itching so we can guide you to the best solution for your situation.
You're not alone: ¼ of the population suffers from itching
An epidemiological study was carried out in France in 2008 on 1011 people (Source: https://pubmed.ncbi.nlm.nih.gov/18353032/). Among them:
- 24% had a dry scalp
- 58% normal scalp
- 16% an oily scalp
This study shows that 44.2% of the population report having a sensitive scalp. In addition, 11.5% reported having a scalp disease, 13% complained of tingling, 25% of itching and 2% of burning or pain. These symptoms were more frequent in people with a sensitive scalp.
In short, ¼ of the population suffers from itchy scalps. This phenomenon affects both men and women.
What causes itching?
The main triggers can be physical (psoriasis, eczema, seborrheic dermatitis...), psychological (stress, fatigue, emotional shock...) or external (pollution, tobacco, shampoos, styling products, heating appliances, lice...).
The first thing to do is to identify the real cause and treat the problem at root.
Observe your scalp
Dandruff
In general, cell renewal takes place in a cycle lasting around 28 days. When the microbiota of the scalp becomes unbalanced, the scalp begins to flake more than usual. As a result, the cycle will be abnormal and reduced. As a result, the cell renewal cycle takes between 5 and 7 days. Dead cells no longer have the time to shed gradually, but cling together to form larger, more voluminous clusters of cells visible at the hairline: dandruff.
Dandruff is most often caused by a fungus present on the scalp: Malassezia furfur, responsible for the abnormal acceleration of the scalp. This fungus prefers oily scalps, as it feeds on sebum. It will proliferate and release waste products (fatty acids) that are particularly irritating for the scalp, leading to inflammation and the formation of scales. This fungus also thrives on dry scalps, which tend to dry out even more.
There are two types of dandruff
Dry dandruff:
They appear on normal or dry scalps that lack sebum. The skin peels off in the form of fine, white flakes that fall off easily and fall onto the nape of the neck and shoulders. In this case, the shampoo used is probably unsuitable, too aggressive and not nourishing enough, or repeated use of a hot hairdryer or straightener can dry out the scalp and encourage dandruff.
Oily dandruff:
They appear on oily scalps. This is often the case with Malassezia furfur. In fact, the large quantities of sebum present feed the fungus. This leads to the appearance of thick, white or yellowish dandruff, which adheres to the hair and is difficult to remove.
Red patches
Have you noticed the appearance of thick flaky patches on your head, accompanied by severe scalp inflammation, redness and itching? Several skin diseases may explain this phenomenon:
- Psoriasis
- Atopic eczema
- Seborrheic dermatitis
Because the symptoms of seborrheic dermatitis and psoriasis are so similar, it can be difficult to tell them apart. These skin diseases are difficult to treat, but symptoms can be alleviated by using appropriate skin care products. We recommend that you consult a dermatologist, who will be able to make a reliable diagnosis and guide you towards the most effective treatment suited to your situation.
What routine should you adopt for your scalp?
A gentle shampoo for the scalp
To begin with, we recommendeliminating aggressive scalpshampoos containing irritating and allergenic surfactants. By applying overly aggressive products, you dry out and unbalance your scalp. Instead, opt for gentle products that respect your scalp, such as Douceur de lait d'Amande prebiotic powder shampoo, which is natural, sulfate-, silicone- and preservative-free. It contains just 11 ingredients, including gentle surfactants to care for your hair and scalp. Its pH is gentle on the skin, it is rated 100/100 on YUKA and certified "Controversial ingredient free" and "Allergen free" by the Clean Beauty application.
You can also alternate with an anti-dandruff shampoo from a parapharmacy, containing an antifungal active ingredient to combat the proliferation of Malassezia furfur. In addition, be sure to choose a shampoo that is sulfate-free, free from ingredients that irritate the scalp, and preferably with a short list of ingredients .
Gentle exfoliation
To remove dead skin cells and impurities and unclog pores, we recommend natural, gentle exfoliation. You can collect your coffee grounds and mix them with an organic vegetable oil of your choice. Massage your scalp gently in circular motions, rinse and shampoo. However, it is recommended to use the scrub no more than once a week.
Nourishing and moisturizing dry scalp
Dry scalps lack sebum and therefore need nutrition. For this, it's important to take oil baths to nourish and soothe irritated scalps. Thanks to the emollient properties of plant oils, they help soothe the scalp. Apply an organic vegetable oil to the roots of your hair, gently massage the oil into the scalp, leave for 1-2 hours and then shampoo. Be sure to rinse your hair with lukewarm water and avoid hot water to combat itching.
To moisturize your scalp, apply aloe vera gel. Moisturizing will soothe your scalp and prevent itching. This has the advantage of moisturizing your scalp as well as your hair. Aloe vera can also be used by people with oily scalps, as it has purifying properties and helps regulate sebum. Apply it directly to your roots, massage, shampoo and rinse with lukewarm water.