There are six different types of skin phototypes that classify skin based on its ability to protect itself from solar radiation. At the lower end of the scale is phototype I, which corresponds to very light skin with difficulty turning brown; and in the upper one, the VI, which describes those of very dark tones, and that tan quickly. In this group are people of color, who have the highest skin accumulation of melanin, the natural pigment that protects against UVA rays. When a black man is exposed to the sun, his skin also tans, but it does so almost immediately and with little risk of burning.
Do blacks get brown?
Slaves and Disabled: Forced Medical Test Volunteers
The main problem to carry out medical research is to have willing volunteers for it. And if they come out for free, much better. This is the story of unethical behavior in medical research.
Invest in the air? The best option to protect your health this season
Breathing cleaner air in any room in your home or office is ideal. TruSens air purifiers are effective at removing smoke, dust, viruses and bacteria.
VITIS: how to boost health in 60 seconds
Using a cetylpyridinium chloride (CPC) mouthwash is a highly effective protective measure that helps us protect our health.
Women are better at doing crosswords
A new study has revealed that women have a 'small but robust' advantage over time.
A coffee in a disposable cup can have more than 1,500 microplastics
A study shows that we can ingest between 37,000 and 90,000 microplastics a year using this type of disposable cup.