Why don't some people get tanned without sunscreen?
2022-04-05
After summer, some people's skin is fair and soft, while others' complexion is a few degrees darker. Incredibly, they all say they have sunscreen. Why don't some people get a tan? Some people get a tan when they get sunburned? Let's get acquainted together.
"Of course I also put on sunscreen, but why is it still black after sun exposure? It's been several days since the beginning of autumn, and I can't turn white."
"I don't seem to pay much attention to sunscreen in the summer, but I rarely get a tan."
These are two different people's attitudes towards tanning. What you're seeing is that the sun's rays seem to be very "friendly" to some people. Some people don't tan without sunscreen. But some people tan easily just by being exposed to the sun. To find out the difference between the two, you need to ask questions first. Why tan?
Why is my skin getting tanned?
Even in direct sunlight, the surface layer of the skin may continue to produce melanin. Melanin continuously absorbs the body's UV rays and reduces skin tanning. The resulting melanin is not always present. After a period of time, melanin is metabolized by the body and can be excreted by the body. The skin also turns white.
However, if there is too much melanin in the human body, after the accumulation of pigment spots, it becomes difficult to metabolize and excrete. These spots are the main cause of darker skin.
Why do some people get tan and others don't?
It turns out that the root cause of darkening of the skin is the production of melanin, so people who are not easy to produce melanin in the human body are of course not easy to become black. The amount of melanin is related to the tyrosinase activity of the human body. Increased tyrosinase activity produces more melanin.
People who are not prone to tanning have lower tyrosinase activity since birth and produce less melanin, which slows the rate of tanning. Less prone to tanning than others under the same sun intensity.
Perhaps people with such genes are lucky people. If you're the type of person who has a hard time getting a tan no matter how much you tan, you're probably going to be happy.
But for those prone to tanning, there's no need to be sad. Follow a few simple steps to prevent tanning.
Don't want to get a tan, sun protection is the key
Sun exposure is good for bones and nutrition. However, prolonged exposure to the sun without proper sun protection can actually increase the risk of skin aging, increase the risk of problems such as sunburn, tanning, and increase the risk of skin diseases, which cannot be denied.
If you don't want to get sunburned or tanned, there are three main ways to avoid it, shade and sunscreen.
To avoid is to avoid the rays of the sun. For that, you're basically outside or out of the sun. Choose a place without the sun to travel, or just choose to travel at night. However, this seems unrealistic. After all, everyone has to go to work and work.
Shading is a form of physical sun protection. It is a must-have sunscreen method for people such as cycling and walking. Use umbrellas, sun protection clothing, ice sleeves, etc. to cover exposed skin and play a role in physical sun protection.
This method is a more effective way to block UV rays, stimulate the skin and stimulate melanin production. Prevents sunburn and tanning. But the downside of physical sunscreen is that it's hot and sweaty. Sunscreen clothing and ice sleeves wrap the skin, which is not conducive to skin heat dissipation. On a clear day, you can protect your face from a tan, but not your feet, even with an umbrella.
A more comprehensive approach to sun protection is sunscreen. This is what some women call chemical sunscreen. The effects of UV rays are blocked by chemical principles. Select with specific SPF and PA Exponential sunscreen for better protection against sunburn and tanning.
Sunscreens are loved by many for their convenience. However, there are still many obstacles on the road to sun protection. If you accidentally step on the sunscreen mistake, it will make you darker and darker.
Misunderstanding 1: There is no sun on cloudy days, no sun protection
Many people decide whether they need sunscreen by looking at the sun outside. If it's cloudy or cloudy, you don't need to apply sunscreen or apply sunscreen. But whether you need sunscreen or not, you need to take a look at the UV Index. The UV index can be found on people's mobile phones. Sunscreen is required as long as the UV index is greater than 3.
As a rule of thumb, there is no sun on cloudy days, but a certain amount of UV rays can still penetrate the clouds and irritate the skin.
Correct way:
Before heading out, look at your phone's UV index, not the sun's rays you see.
Misunderstanding 2: The higher the SPF of the sunscreen, the better, and the effect of multiple layers is better
A lot of women are doing research on sunscreen. Among them, the SPF index often reaches 50+, which is the highest sun protection level, suitable for beach and long-term sun protection. And PA+++ means that it can delay skin tanning time.
However, you should not always choose to have a high SPF of sunscreen. Sunscreen is a chemical sunscreen that blocks UV damage and also affects how your pores breathe. In the fall or on short trips, the pursuit of high sunscreen is more likely to lead to acne and oily conditions.
And even if you add sunscreen, you won't get the effect of adding SPF. The ability to block UV rays depends on the highest SPF. It is more convenient to choose the sunscreen that suits you.
Correct way:
You need to make a decision according to your own situation, such as summer travel, beach travel, tropical areas, etc., you can choose a higher sunscreen.
Misunderstanding 3: Wearing sunscreen will not tan
In fact, the effective sun protection time of sunscreen is only about 4 hours, usually up to 8 hours. If you need long-term sunscreen, you will need to reapply. The oil and sweat secreted by the skin, as well as the gradual weakening of the sunscreen after the formation, will affect the sunscreen effect.
Correct way:
After applying sunscreen, wait about 15-30 minutes for the sunscreen to form before going out. Can maintain better sun protection effect. Then, to replenish sun protection, reapply sunscreen every 3-4 hours for extended outdoor activities.
"Of course I also put on sunscreen, but why is it still black after sun exposure? It's been several days since the beginning of autumn, and I can't turn white."
"I don't seem to pay much attention to sunscreen in the summer, but I rarely get a tan."
These are two different people's attitudes towards tanning. What you're seeing is that the sun's rays seem to be very "friendly" to some people. Some people don't tan without sunscreen. But some people tan easily just by being exposed to the sun. To find out the difference between the two, you need to ask questions first. Why tan?
Why is my skin getting tanned?
Even in direct sunlight, the surface layer of the skin may continue to produce melanin. Melanin continuously absorbs the body's UV rays and reduces skin tanning. The resulting melanin is not always present. After a period of time, melanin is metabolized by the body and can be excreted by the body. The skin also turns white.
However, if there is too much melanin in the human body, after the accumulation of pigment spots, it becomes difficult to metabolize and excrete. These spots are the main cause of darker skin.
Why do some people get tan and others don't?
It turns out that the root cause of darkening of the skin is the production of melanin, so people who are not easy to produce melanin in the human body are of course not easy to become black. The amount of melanin is related to the tyrosinase activity of the human body. Increased tyrosinase activity produces more melanin.
People who are not prone to tanning have lower tyrosinase activity since birth and produce less melanin, which slows the rate of tanning. Less prone to tanning than others under the same sun intensity.
Perhaps people with such genes are lucky people. If you're the type of person who has a hard time getting a tan no matter how much you tan, you're probably going to be happy.
But for those prone to tanning, there's no need to be sad. Follow a few simple steps to prevent tanning.
Don't want to get a tan, sun protection is the key
Sun exposure is good for bones and nutrition. However, prolonged exposure to the sun without proper sun protection can actually increase the risk of skin aging, increase the risk of problems such as sunburn, tanning, and increase the risk of skin diseases, which cannot be denied.
If you don't want to get sunburned or tanned, there are three main ways to avoid it, shade and sunscreen.
To avoid is to avoid the rays of the sun. For that, you're basically outside or out of the sun. Choose a place without the sun to travel, or just choose to travel at night. However, this seems unrealistic. After all, everyone has to go to work and work.
Shading is a form of physical sun protection. It is a must-have sunscreen method for people such as cycling and walking. Use umbrellas, sun protection clothing, ice sleeves, etc. to cover exposed skin and play a role in physical sun protection.
This method is a more effective way to block UV rays, stimulate the skin and stimulate melanin production. Prevents sunburn and tanning. But the downside of physical sunscreen is that it's hot and sweaty. Sunscreen clothing and ice sleeves wrap the skin, which is not conducive to skin heat dissipation. On a clear day, you can protect your face from a tan, but not your feet, even with an umbrella.
A more comprehensive approach to sun protection is sunscreen. This is what some women call chemical sunscreen. The effects of UV rays are blocked by chemical principles. Select with specific SPF and PA Exponential sunscreen for better protection against sunburn and tanning.
Sunscreens are loved by many for their convenience. However, there are still many obstacles on the road to sun protection. If you accidentally step on the sunscreen mistake, it will make you darker and darker.
Misunderstanding 1: There is no sun on cloudy days, no sun protection
Many people decide whether they need sunscreen by looking at the sun outside. If it's cloudy or cloudy, you don't need to apply sunscreen or apply sunscreen. But whether you need sunscreen or not, you need to take a look at the UV Index. The UV index can be found on people's mobile phones. Sunscreen is required as long as the UV index is greater than 3.
As a rule of thumb, there is no sun on cloudy days, but a certain amount of UV rays can still penetrate the clouds and irritate the skin.
Correct way:
Before heading out, look at your phone's UV index, not the sun's rays you see.
Misunderstanding 2: The higher the SPF of the sunscreen, the better, and the effect of multiple layers is better
A lot of women are doing research on sunscreen. Among them, the SPF index often reaches 50+, which is the highest sun protection level, suitable for beach and long-term sun protection. And PA+++ means that it can delay skin tanning time.
However, you should not always choose to have a high SPF of sunscreen. Sunscreen is a chemical sunscreen that blocks UV damage and also affects how your pores breathe. In the fall or on short trips, the pursuit of high sunscreen is more likely to lead to acne and oily conditions.
And even if you add sunscreen, you won't get the effect of adding SPF. The ability to block UV rays depends on the highest SPF. It is more convenient to choose the sunscreen that suits you.
Correct way:
You need to make a decision according to your own situation, such as summer travel, beach travel, tropical areas, etc., you can choose a higher sunscreen.
Misunderstanding 3: Wearing sunscreen will not tan
In fact, the effective sun protection time of sunscreen is only about 4 hours, usually up to 8 hours. If you need long-term sunscreen, you will need to reapply. The oil and sweat secreted by the skin, as well as the gradual weakening of the sunscreen after the formation, will affect the sunscreen effect.
Correct way:
After applying sunscreen, wait about 15-30 minutes for the sunscreen to form before going out. Can maintain better sun protection effect. Then, to replenish sun protection, reapply sunscreen every 3-4 hours for extended outdoor activities.
