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ONE of the most popular questions I get asked is, ‘Is skin not just skin? Bar colour is it that different? Really? Really, really?’
Yes really, really. There are similarities, but Black skin is physiologically different to white skin in a few ways. There are also cultural differences in the way we treat the skin.Everyone – be you of Black, white or mixed-race heritage – has melanocyte cells, living in the very bottom layer of your epidermis. Within these melanocyte cells are the melanosomes granules which contain the pigment called melanin.
There are two different types of melanin pigment: eumelanin – a dark brown pigment, and pheomelanin – a red or yellow tint. Black people and those with darker skin tones have more eumelanin, hence our different shades of brown skin colour. The key factor when it comes to skin colour is the size and the amount of melanocytes and melanosomes. Some studies have shown that Black skin produces twice as much melanin as white skin. Together, with the more even distribution of melanin in Black skin, it gives some protection from premature ageing caused by UV radiation from the sun. On average, research points to Black skin having an approximate natural sun protection factor of 13.4. White skin sits somewhere around 3.3.
But before you run amok with no sunscreen, remember that the increased melanin levels in Black skin also make it more vulnerable to discolouration, be it loss of colour or patchy,uneven deposits of colour .Another point of difference between Black and white skin is the rate at which water is lost through the skin. One of the functions of the skin is to provide a barrier against water loss and to help the skin stay hydrated.
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