Why does my skin turn red after being sunburned?
With the arrival of summer, the intensity of sun exposure increases, and many people find that their skin becomes red and even burns after being exposed to the sun. This phenomenon not only affects the appearance, but may also cause more serious skin problems. So, why does the skin become red after being sunburned? This article will give you detailed answers based on the hot topics and hot content on the Internet in the past 10 days.
1. The main reasons for sunburned skin
The main cause of skin sunburn is damage to the skin from ultraviolet (UV) rays. Ultraviolet rays are divided into three types: UVA, UVB and UVC, among which UVA and UVB have the greatest impact on the skin. The following are the specific mechanisms of skin tanning:
| UV type | effects on skin |
|---|---|
| UVA | It has strong penetrating power and can reach the dermis layer, causing skin aging, relaxation and pigmentation. |
| UVB | The energy is relatively high and mainly acts on the epidermis, causing redness, burns and peeling of the skin. |
When the skin is exposed to ultraviolet rays, UVB directly damages epidermal cells, triggers an inflammatory response, leads to dilation of blood vessels and increased blood flow, which manifests as skin redness. In addition, UV rays can activate melanocytes, causing skin darkening or sun spots.
2. Hot topics on the Internet in the past 10 days related to skin tanning
The following are the hot topics and content related to red skin on the Internet in the past 10 days:
| topic | focus of discussion | heat index |
|---|---|---|
| Summer sun protection misunderstandings | Many people think that sun protection is not necessary on cloudy days, but in fact UVA can still penetrate clouds. | ★★★★☆ |
| After-sun repair methods | Aloe vera gel, cold compresses and moisturizers are popular options for after-sun recovery. | ★★★★★ |
| Choice of sunscreen | The differences between physical sunscreen and chemical sunscreen and their applicable groups have triggered widespread discussions. | ★★★☆☆ |
3. How to prevent and relieve skin redness
To avoid skin redness and UV damage, you can take the following steps:
| Precautions | Specific methods |
|---|---|
| Apply sunscreen | Choose sunscreen with SPF30 or above and PA+++, and reapply it every 2 hours. |
| physical occlusion | Wear a hat, long-sleeved clothing and an umbrella to reduce direct UV exposure. |
| Avoid periods of bright light | 10 a.m. to 4 p.m. is the time when ultraviolet rays are strongest, so avoid going out as much as possible. |
If your skin has become red due to sunburn, you can take the following measures to relieve it:
| Mitigation methods | Specific operations |
|---|---|
| cold compress | Apply cold water or an ice towel to the sunburned area to reduce the burning sensation. |
| Moisturizing and repairing | Use skin care products containing ingredients such as aloe vera and vitamin E to repair damaged skin. |
| avoid irritation | Avoid using products containing alcohol or fragrance after sun exposure to avoid aggravating inflammation. |
4. Long-term effects of sunburned skin
Skin sunburn is not only a short-term inflammatory reaction, but long-term repeated sunburn can also lead to more serious skin problems:
| long term effects | Specific performance |
|---|---|
| photoaging | The skin is sagging, wrinkles increase, and elasticity decreases. |
| Pigmentation | Pigmentation problems such as sun spots and chloasma occur. |
| skin cancer risk | Long-term UV exposure may increase the risk of skin cancer. |
Therefore, protecting the skin from UV damage is not only a compulsory course in summer, but also a healthy habit that needs to be paid attention to all year round.
5. Summary
Skin sunburn is a manifestation of direct damage to the skin by ultraviolet rays, especially the effect of UVB is more obvious. It can be seen from the hot topics on the Internet in the past 10 days that sun protection and after-sun repair have become the focus of attention in summer. Proper use of sunscreen, physical shielding, and scientific after-sun care can effectively prevent and alleviate skin redness. At the same time, long-term sun protection can also avoid the risk of photoaging and skin cancer. I hope this article can help you better protect your skin and enjoy a healthy summer!
check the details
check the details
en
