The sun in the summer months The way her hair shines brightly, the smell of the sea, the birds chirping… Isn’t it beautiful?

In these months Our skin starts to tan under the influence of the sun. But we can’t say the same about our hair. So what could be the reason for this?

The key to both the tanning and hair lightening processes is the way the ultraviolet radiation (UVR) emitted by the sun affects the melanin pigment in hair and skin.

Hair cells are dead; only lipids, water, pigments and consists of structural proteins.

When the sun’s rays hit these dead cells, Lightens hair color by breaking down melanin pigment causes.

on the other hand The skin is alive and has an important defense mechanism. Helen Norton, professor of anthropology at the University of Cincinnati, has made a scholarly statement on this topic:

“Melanin acts as a natural sunscreen on the skin. One of the things he can do is is to absorb UV radiation when it hits the skin. “So it prevents it from penetrating deep into our epidermis and dermis, which can prevent some of the damage that UV can do.”

This reaction, called facultative melanogenesis, occurs in three phases.

Firstly, when you go outside in the sun pigments darken immediately and your surprised body registers the change in UV radiation.

After a few minutes, the messenger is stimulated in your cells and telling your genes to produce more melanin It causes rapid melanin production.

Later With increased pigment production There is a persistent darkening reaction that takes several hours.

So all these work together to give you a tan, but If the reactions don’t work quickly, you may get a sunburn.

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