Understand sunscreen for face and how it works. How UV damage your skin and how to protect skin with sunscreen and top recommended products.
What is UV and different types of UV
There are two types of UV that reach us on earth: UVA & UVB. Both kind of UV can damage the skin but in slightly different way.
UVB is the most dangerous of
How UV rays damage the skin?
The upper layer of the skin it calls the epidermis (thượng bì). Visible light from the sun is reflected off from the epidermis, but UVA penetrate into it. UVB reacts with DNA of cells and cause DNA damage. Our skin cells are able to repair DNA damage, but with time. If enough damage DNA accumulates, skin cancer can form.
In the epidermis, there are cells called melanocytes. when skin cells are damage by UV light, melanocytes release a dark pigment call melanin. Melanin is able to absord UV sight. and so, the body use melanin as UV shield. (lá chắn)
But melanin isn’t able to completely stop skin damage from UVB. A skin tan is actually a sign that skin damage already occurred. And the body is preparing itself for further UV exposure. In a sunburn, UVB causes so much damage that skin cells die and upper layer of skin peels off. The dead of cells also trigger inflammation, making skin red, hot and painful to touch.
UVA can also increase the risk of skin cancer but mostly involved in accelerating skin aging. UVA is able to infiltrate down to the deep layer of skin, called the dermis (trung bì). The dermis has a scaffolding of molecules such as collagen that makes your skin elastic.
When you pull in your skin, it is this scaffolding that help your skin spring back. UAV damage this collagen scaffolding. This makes your skin more prone to wrinkling and sagging (sệ, lún sụt).
We know that sunlight in moderate amounts of helpful for making vitamin D. Also UV light prescribed by doctors can be helpful to immune based skin condition like psoriasis. (bệnh vảy nến)
So in healthy doses, sunlight can be good for you. But how do you protect yourself from the damaging effects of excess UV.
HOW SUNSCREEN PROTECT YOUR SKIN
The purpose of using sunscreen is to shield the body from the sun rays, it has several harmful effects including sunburn, aging and skin cancer promotion. There are 2 types of sunscreens: physical and chemical blockers.
Physical blocker: reflect the sun rays by physical barrier.
| Sunscreen types | How it works | Effects |
| Physical blocker | Create skin barrier to reflect UV light. Conspicuously visible on the skin | |
| Chemical blocker | Absorb the UV light. Transparent when drop down into skin. |
Top recommended sunscreen for face recommended by dermatologist.
- Sunscreen for face – La Roche Posay Anthelios Mineral Tinted Sunscreen for Face SPF 50
Ultimate protection for ultra long UVA
Anthelios Mineral is the new generation of sunscreen from La Roche Posay that famous with #IMpossible #protectlikeaderm #protech400. Formulated with Netlock technology, it offers a long-lasting texture and water existant.
This sunscreen for face protects skin from UV’s ray which causes freckle and is harmful for skin elasticity. Anthelios is the chemical blocker that drop down into skin, absorb and destroy UV to protect skin barrier.
La Roche Posay Anthelios is a comfortable sunscreen for face with liquid transparent texture and no fragrance. This is suitable for variety of skin types from sensitive to combination.
What I personally like about this product:
It is very easy to penetrate into skin without shiny, totally transparent on skin surface.
No greasy. tolerant and no strings when applying around the eyes.
It has moisturizer ingredient, therefore i can use it before foundation when make up.
2. Vichy Capital Soleil Dry Touch
Sunscreen for face that has high protection from UV rays without greasy and water resistant
Vichy capital soleil dry touch is one of the sunscreens for face from Vichy. It is a greasy sunscreen without fragrance and oily-free. Vichy sunscreen helps to against UVA and UVA, cleanse skin pore and increase skin hydration.
How it works
| Formulation & ingredients | Effects |
| Mexoryl SX – XL® | Skin barrier to against UVA & UVB |
Vichy sunscreen has wide array of protection skin from UVA (short wave leght) harmful for skin aging and wrinkle and UVB harmful for skin cancer and skin elasticity.
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