Our skin color is determined by a pigment called melanin, and while everyone has melanin (both fair and dark-skinned people), it comes in different forms and ratios. The two forms of melanin are calledeumelanin and pheomelanin. Eumelanin comes in primarily brown and black hues, while pheomela...
The job of your immune system is to protect your body from these infections. The immune system protects you in three different ways: It creates a barrier that prevents bacteria and viruses from entering your body. If a bacteria or virus does get into the body, the immune system tries to ...
The job of your immune system is to protect your body from these infections. The immune system protects you in three different ways: It creates a barrier that prevents bacteria and viruses from entering your body. If a bacteria or virus does get into the body, the immune system tries to ...
UV rays trigger the production of free radicals in the skin that lead to DNA damage and the breakdown of collagen and elastin in the skin, causing wrinkles, notes the World Health Organization (WHO); it also stimulates the melanin production that leads to skin discolorations, says Garshick. ...
Visible light doesn’t seem to cause muchdirectDNA damage, while UV does. Visible light also doesn’t increase the levels of the inflammatory cytokinesIL-8andTNFαwhile UV does. Blue light doesn’t significantly changethe levelsof p53, the tumour suppressor protein, while UV does. ...
The Eumelanin Human Skin Colour scale, meanwhile, is based on the amount of eumelanin (a type of melanin) in a person’s natural skin color [4]. This makes it easier to quantify and measure without a visual comparison aid. This may allow SMP technicians to create a pigment colour that...
There are two kinds of melanin found in the hair: eumelanin (the most common and responsible for hair shades from brown to black) and phaeomelanin (responsible for yellowish-blond, ginger and red colors). Absence of pigment produces white/gray hair. Before any permanent color can be deposite...
When skin is exposed to UV light, the body produces melanin, a dark pigment made by skin cells called melanocytes. Melanin is designed to protect the skin, and how much a person produces depends on genetics, according to the Skin Cancer Foundation.1 ...
Benefits: Also called vitamin C, it has potent antioxidant properties and helps protect against sun damage, reduces dark spots, and increases collagen production.¹⁴ Mode of Action: Neutralizes free radicals which protects your cells' DNA from damage. It also decreases melanin production.¹...
How does the function of melanin explain not only the variety of skin colors but susceptibility to skin cancer? Going out into the sun stimulates quite a bit of activity in the skin, especially on a hot summer day. Describe what is happening in the skin in response to the sunlight. Determ...