NO.1 DERMATOLOGIST RECOMMENDED BRAND FOR SUN PROTECTION IN THE UK*.
- UV Rays: What are they?
- UV penetration
- UVB and UVA rays: What are they?
- How can you protect yourself from these ultraviolet rays?
UV rays: What are they?
Did you know that ultraviolet (UV) rays are invisible to the human eye? This is because of their wavelength. Whilst visible light encompasses 400 to 760nm, UV rays are between 100-400nm. UV rays are divided into two categories according to their wavelength: UVA, a more extended wave, and UVB, a shorter wave.
In addition, they are known to have higher energy than visible light and can have harmful effects on the skin, eyes, and immune systems of people exposed to them for prolonged periods and without adequate protection. These rays can cause sunburn and premature skin ageing. Therefore, protecting yourself from the sun with sunscreen and reducing exposure to solar radiation is important. Regular use of sunscreen can also help to prevent the appearance of dark spots and uneven skin tone.
UV penetration
It is essential to note that although some UV rays are absorbed by the atmosphere and do not reach the Earth's surface, called UVC rays, UVB and UVA rays penetrate the skin when exposed to the sun.
Ultraviolet radiation (UVB and UVA) can penetrate the skin through theepidermis, the outermost layer of the skin. The amount and depth to which UV radiation penetrates the skin depends on several factors, including the wavelength of the UV rays, the amount of melanin in the skin, and the characteristics of the sun exposure.
Effects of ultraviolet rays
UV rays can have both positive and negative effects on the skin. Below, we will explore the advantages and disadvantages of UV exposure in greater depth:
Positive Effects
Controlled and adequate exposure to the sun's UV rays can have the following benefits:
- Vitamin D synthesis: Highly controlled UV exposure helps promote vitamin d production, essential for bone health and the immune system.
- Improvement of some skin conditions: In some cases, highly controlled exposure to UV radiation can also positively affect certain skin conditions, such as psoriasis, although you should always check with your dermatologist or GP before following any advice on this skin condition.
Negative effects
On the other hand, excessive or prolonged exposure to UV rays can have harmful effects on the skin:
UVB and UVA rays: What are they?
UVB and UVA are two types of ultraviolet radiation from the sun that can harm our skin. Although both are harmful, they differ in their wavelength and how they affect the skin.
What are UVB rays?
UVA rays are a form of ultraviolet radiation with a longer wavelength than UVB rays. This type of ray can penetrate deeper into the skin and be responsible for premature skin ageing and oxidative damage. Therefore, it is important to be careful when using tanning booths, which mostly emit UVA, as they can be harmful if we do not take the proper precautions. UVA rays can also penetrate windows and clouds.
How can you protect yourself from these ultraviolet rays?
Protecting our skin from UVB and UVA rays is essential to maintain healthy looking skin and prevent serious skin conditions. Here are some key steps to protect yourself against these harmful ultraviolet rays.
Protection from the sun
One of the most effective ways to protect against UV radiation is to limit your exposure to the sun, especially during the peak hours of UV radiation, which are usually between 10am and 4pm.
Seek shade
Another important measure to protect yourself from UV rays is to seek shade, especially during peak radiation hours. Avoiding direct sun during these hours can help to reduce exposure and the risk of skin damage. When outdoors, frequently take shelter under trees, umbrellas, or awnings.
Prolonged exposure to the sun can increase body temperature, which can cause dehydration, heat exhaustion, or heat stroke. In addition, prolonged exposure to direct sunlight can cause eye fatigue and eye discomfort. Sheltering in the shade can also provide a break for the eyes and reduce eye strain caused by exposure to bright sunlight.
Use sunscreen
Another essential measure to protect the skin from UVB and UVA rays is a broad-spectrum sunscreen that protects against both types of radiation. Choose a sunscreen with a high sun protection factor (SPF) suitable for your skin type. La Roche-Posay offers a wide range of high-quality sunscreens formulated for sensitive skin and effective against UVB and UVA radiation.
I RECOMMEND MY PATIENTS WEAR ANTHELIOS DAILY, RAIN OR SHINE.
Correct application of sunscreen
The way we use sunscreen is also crucial to ensure adequate protection. Be sure to apply enough sunscreen to cover all exposed areas of the skin, including the face, neck, ears, arms, and legs. Don't forget sensitive areas such as the lips, scalp, and hands.
Apply sunscreen just before sun exposure, so it’s dry to the touch, and also after swimming or during physical activity. Remember to reapply sunscreen frequently and generously.
Skincare routines should always include facial sunscreen throughout the year, especially in summer. Choosing a sunscreen designed for the face is recommended, as it has specific characteristics and needs that differ from the skin on the rest of the body.
Broad-spectrum sunscreen
Keep your skin protected from ultraviolet rays with La Roche-Posay’s Anthelios UVMUNE 400 Invisible Fluid SPF50+ for sensitive skin. This award-winning sunscreen provides optimal protection against UVB and UVA rays, and has the most efficient UV filter against the most penetrative rays*. Its light, non-greasy formula does not clog pores or leave residue, making it perfect for daily use over the exposed face, neck, chest, and hands. For maximum protection, reapply frequently and generously.
This product offers a very high SPF rating and broad coverage against UV rays thanks to its formula with Mexoryl400. It is also water, sweat and sand resistant, so you can be sure that your coverage will be maintained during outdoor activities.
The NETLOCK technology contains filters, which are encased in fine droplets of gelled oils, which allow the formation of a continuous and flexible film on the skin’s surface. The ultra-thin film created leaves no trace, or greasy or sticky effect on the skin.
For those looking for protection against the sun's UV rays while eliminating shine, Anthelios Oil Correct SPF50+ is an excellent choice. This high-quality sunscreen features a very high SPF rating and its mattifying effect helps to control shine, making it an ideal choice for those with oily skin. It’s lightweight, non-greasy gel-cream formula absorbs quickly and easily, making it perfect for use under makeup.
Travel size sunscreen
If you're looking for a convenient format for travelling, our award-winning Anthelios XL SPF50+ Stick for face and body is an ideal choice. Suitable for all skin types, this sunscreen offers broad-spectrum protection against UVA and UVB rays, protecting against sunburn, premature ageing, and skin blemishes. Its compact size allows you to take it everywhere, and its lightweight formula is easy to apply.
It absorbs quickly and has a light, non-greasy texture, so it will not leave your skin feeling sticky or greasy. In addition, its non-comedogenic formula prevents clogged pores. Its moisturising formula leaves your skin feeling soft and smooth.
This fragrance-free formula contains La Roche-Posay Thermal Spring Water to soothe and prevent free radical damage to the skin. It is also water-resistant, so you can enjoy your outdoor activities without having to reapply it continuously.
In conclusion, sunscreen is essential to protect your skin from the harmful effects of the sun's UV rays. It is vital to apply sunscreen correctly, using a sufficient amount and reapplying frequently, especially after sweating or swimming. Daily use of sunscreen, even on cloudy days, can help protect the skin in the long term and prevent damage caused by UV rays.
*No.1 Dermatologist Recommended Brand in the UK: Study of 73 Consultant Dermatologists Jan-April 2023. For more info visit https://www.laroche-posay.co.uk/en_GB/number1claim.html, 2021
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