In this article we want to give a brief overview on the question: How does sun tanning work?
Sun tanning, also known as tanning, can be described as the process where the color of the skin is darkened or tanned. In most cases it is due to the skin being exposed to ultraviolet radiation (UV) from sunlight.
Exposing the body moderately to sunlight encourages the production of vitamin D, which is essential for the body. Over exposure to the sunlight and ultraviolet rays can have negative effects such as sunburn.
So, how does the sun tanning work?
When the ultraviolet rays of the sun, known as UV-B, contact the Skin, it results in a process called Melogenesis. Melogenesis is an increase in the skin pigment called Melanin. Melanin is the brown pigment that leads to tanning, occurring as well as protecting the skin from burning. Once the skin is exposed to UV radiation it increases the production of melanin as way of protecting the skin from more damage.
Types of tanning
There are two types of tanning that occur once the skin is exposed to ultraviolet Radiation: Immediate Pigment Tanning and Delayed Pigment Tanning
Immediate Pigment tanning
How does sun tanning work if your Body is transforming to Brown rather fast? This type of tanning happens immediately because no new melanin granules are made as the skin redistributes the pigment already available in the skin. The tan occurs straight away and is pronounced and easily noticeable after just some hours. It is worth noting that this type of tan occurs from the skin being exposed to UV-B radiation from sunlight as well as UV-A radiation from artificial forms such as tanning beds and sprays.
Delayed pigment tanning
This type of tanning does not happen immediately and takes time to form. It only occurs from the skin being exposed to UV-B rays from the sun. The tan occurs because the skin tends to make more melanin pigment granules and spreads them across the living layer of the skin. As stated earlier, it does not occur immediately and starts showing after about three days of the skin being exposed and becomes pronounced and noticeable after about two weeks.
Does sun tanning affect people in the same way?
The tanning process does not affect people in the same way because the natural skin color of people has an effect on their reaction to being exposed to the sun. Darker skinned people tend to tan more deeply than people who are light skinned because they produce more melanin.
Please also check the UV-B index around you: UV index