My sunscreen review

First of all, thank you for visiting my website! Second of all, did you know that skin cancer is the most common type of cancer and wearing sunscreen regularly can prevent that? Below, I will review some sunscreens I have tried, the importance of sunscreens and how to wear them correctly.

Terminology definitions:

  • UV radiation: radiation from the sun that are outside of visible light spectrum.
  • UVA vs UVB: UVA has longer wavelength and is associated with skin aging, while UVB is associated with burning. Both can cause mutation to skin cell's DNA and cause skin cancer.
  • SPF: a measurement of protection against UVB.
  • Broad spectrum: An indicator to state that the sunscreen is protective against both UVB and UVA. The term is commonly used on US's sunscreens.
  • PA: A rating system of protectiveness against UVA. The system is commonly used on Asian sunscreens.

Preventing skin cancer. According to The Skin Cancer Foundation, skin cancer is the most common type of cancer in the United States and worldwide. 90% of non-melanoma skin cancer are associated with exposure to UV rays from the sun, while having 5 or more sunburns can double our chance of getting melanoma skin cancer.

Effective anti-aging treatment. Sunscreen can prevent photoaging, which includes darkspots, wrinkles, and fine lines. Studies show that sunscreen can actually reverse the signs of aging as well.

Source: Institute for Public Health at Washington University in St Louis

Wear enough sunscreen. Ideally, we should wear broad spectrum sunscreen with SPF 30 or more whenever we are exposed to the sun and reapply every two hours. There's no doubt that sunscreen is needed when we are participating in outdoor activities during the day, but did you know we should also wear sunscreen indoors? When we are indoors facing large windows or in the car, UVB rays are blocked, but UVA rays can penetrate through glass and deep into the skin layers. The same reasoning applies to why we should still wear sunscreen on cloudy days. For more guidance, check out The Skin Cancer Foundation's website.

Wish you the best skin health!