Hey, it's snowing on your shoulders! What now? If you google information about dandruff, you will find some answers to your questions, but by no means all. How exactly does dandruff arise and what do you do about it? We ask Dylan Kok, a trichologist (specialist in hair diseases and abnormalities), who works at the Hair Clinic.

What is dandruff?

"Dandruff is an excess of yeast on the scalp. It can be mixed with dander in a dry, powdery form and in a sticky form, with the yeast sticking to your scalp."

How does dandruff develop?

"It has everything to do with the condition of the scalp. There is a protective layer on the scalp. That layer can disappear due to the use of the wrong shampoos. If the layer is gone, irritation will start more quickly. It starts with a red, dry scalp and increased sebum production. This sebum production causes a yeast attack. "

So dandruff comes from using the wrong shampoo?

"True, chemical shampoos can dry out and affect the scalp. However, some people who wash with these shampoos do not suffer from anything. That is because one has a better scalp than the other and is not predisposed to irritations and dandruff. even someone who has no tendency to suffer from dandruff, due to improper care. "

"Chemical ingredients in shampoos wash away the protective layer on the scalp." Dylan Kok, trichologist

"The worst ingredient in chemical shampoos is sodium lauryl sulfate. This soap solution provides a lot of foam, but it makes your hair too clean and washes away the protective layer. In addition, many shampoos have too high a pH value. The scalp has a pH -value of 5, many shampoos of 7 or higher. That disrupts the skin. "

What does a good shampoo meet?

"Then you come to shampoos with natural ingredients. The most important thing is that there are no sulfates and parabens in the shampoo and that the pH value is 5 or lower."

Washing with a natural shampoo helps against dandruff. (Photo: 123F)

Are there any other factors that encourage dandruff?

"If your skin is already irritated, the stress hormone cortysol can speed up the dandruff process. That doesn't happen immediately, but about six weeks after you experience a lot of stress. Heating air can also accelerate irritation from drying out the scalp."

How do you best deal with dandruff?

"When you have the powdery form of dandruff, you don't have to buy an anti-dandruff shampoo right away. Find a good natural shampoo and wash your hair every other day. If that doesn't help, choose a not too harsh, natural anti-dandruff shampoo. "

"When you have the powdery form of dandruff, you don't have to buy an anti-dandruff shampoo right away." Dylan Kok, trichologist

"If you have the sticky variety of dandruff, you should use an anti-dandruff shampoo that has a fungicidal or bactericidal ingredient, such as ketaconazole. Stop once the dandruff is gone and then switch to a good, natural shampoo."

What happens if your dandruff doesn't tackle?

"Then there can be eczema and possibly even psoriasis, the well-known dander disease, although that depends on your genes. So it is important that you don't let dandruff last too long."

Does dandruff return sooner if you've had it before?

"No, the scalp is resilient. So if you continue to take good care of it, it won't return."

Is your hair less attractive from dandruff?

"No, it cannot cause hair loss or less shine. But those chemical shampoos can affect the hair."