A Sun Protection Primer Part III

Last week, we explained the different standards to measure sun protection – mainly SPF and the Japanese PA system. This week, we’ll touch on the difference between Sunblock and Sun Screen. And the ingredients that can guarantee safe coverage in sun protection products.

The most common types of sunblock are the physical block and the chemical block.

Chemical blocks usually have the words “sun screen”, or “sun filter” in their names, while physical blocks often have the word “sun block” in their name. The key difference between these 2 types of sun protection are the way they work to prevent sun damage.

Chemical blocks work by absorbing UV rays and then changing these rays to thermal energy via chemical conversion. Many of these sunscreens work well against UVB, but are less effective against UVA, especially against longer UVA wavelengths. However, recent innovations like the chemical avobenzone works against all UVA wavelengths, so do look out for that in your sunscreen to ensure maximum protection. The one downside of chemical blocks (especially those with a high SPF rating) is that they might irritate sensitive skin – due to the chemical conversion process.

Physical blocks work by creating a physical barrier on skin to deflect UV rays when they reach the skin. Because the UV rays are scattered when they come into contact with physical block ingredients, they do not damage skin. Physical blocks often contain titanium dioxide and zinc oxide, good ingredients that provide broad spectrum protection against UVB and all UVA wavelengths. Although poor quality sun blocks can feel thick and blend poorly on skin, new formulations have emerged containing finely blended ingredients that feel light and comfortable when applied, and also look less conspicuous on skin.

Endogenous Sun Essence ($83)

If you are looking for a good sunblock, why not consider Faith Cosmetic’s EndogenouS Sunprotector? This made-in-Japan product (PA+++, SPF 40) is an additive-free physical sunblock that contains both Titanium Dioxide and Zinc Oxide. With 11 active ingredients like CoEnzyme Q10 (anti-oxidant), Rice Bran (soothing properties for sensitive skin) and Sodium Hyaluronate (moisturising), this product not only works to protect against sun-damage, but is also good for your skin! Best of all is how silky smooth and light it feels on skin – due to the double silicon coating – making it a wonderful make-up base. It’s reflective qualities also ensures that skin looks more flawless and even!

Priced at $83, a small bottle (50ml) can last for a long long time, making it a great investment in  your anti-sun damage toolkit!