Sunscreen: Their Importance and Choosing the Right Filters
Sunscreen, often called sunscreens, plays a crucial role in protecting the skin from the harmful effects of UV rays. These rays, including those in the UVA and UVB spectra, can lead to photoaging and even skin cancer, making the choice of appropriate sunscreen filters a necessity.
SPF Rating
The numbers next to the abbreviation SPF (SUN PROTECTIVE FACTOR) indicate how much UV radiation we can receive without the risk of sunburn.
For example, SPF 30 means that with sunscreen, our skin can withstand 30 times more UV rays than without it.
SPF 15 blocks 93% of rays
SPF 30 blocks 97% of rays
SPF 50 blocks 98% of rays
Note: The SPF index does not affect the amount of time you can spend in the sun. Whether it’s SPF 15 or SPF 50, all sunscreen products lose their properties after a few hours of application. And the cream should be reapplied after an hour and a half or two hours.
Physical and Chemical Filters: Differences and Characteristics
Filters in sunscreen creams can be physical (mineral) or chemical (organic). Physical filters, such as zinc oxide and titanium dioxide, work by reflecting solar rays like a mirror. These are ideal for sensitive skin, without causing irritation or allergic reactions.
On the other hand, chemical filters absorb UV rays and convert them into heat energy. They are characterized by a lightweight texture, making them convenient for daily use. However, chemical filters previously lost their effectiveness after a few hours, requiring periodic reapplication.
Photostable Chemical Filters: An Innovation in Sun Protection
Modern innovations in sun protection have led to the emergence of photostable chemical filters. These filters provide improved resistance to UV radiation, extending the skin’s protection time up to 8 hours in urban conditions. This makes them an ideal choice for daily use.
Let’s take a look at the key points to consider when choosing and using sunscreen.
1. Phototype and SPF/UVA labeling:
Depending on your phototype, choose a sunscreen with an appropriate level of SPF and UVA protection.
For the first three phototypes, it is especially important to pay attention to labeling indicating UVA and UVB protection.
2. Skin type and product texture:
For oily, problematic, and acne-prone skin, it is better to choose chemical filters, so that sunscreen products with physical filters do not clog pores with their dense consistency. Gel textures will be more comfortable. But if you have pigmentation-prone skin, carefully look for specific UVA-PPD protection numbers. For dry skin, sunscreen with moisturizing effect is suitable; it is better to choose emulsions and creams.
For skin with medical conditions (e.g., rosacea, dermatitis, allergies) and sensitive eyes, it is better to opt for physical filters, as these are less likely to cause irritation and whitening, which sometimes evens out the complexion if there is redness. It’s worth avoiding nano-shaped filters if your skin is damaged. It is better to opt for emulsions, creams, and sticks.
Rules for using sunscreen:
Apply sunscreen 20 minutes before sun exposure.
Reapply protection every 2 hours, especially if you are staying in the sun for extended periods.
Methods of Removing the Product:
All SPF products are removed with hydrophilic oil.
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