There are two types of ultraviolet rays — UVA and UVB—that can wreak havoc on your skin. Although UVA rays are inherently less powerful, small daily doses of UVA can cause longterm skin injury, even without signs of sunburn. UVB rays are most abundant in midday sun—any time your shadow is shorter than you are—and are the rays most associated with a sunburn. An estimated 90 percent of skin aging is caused by the sun.

The effects of near infrared rays on the skin include microvascular dilation and pigmentation. The skin pain threshold will be reached when the skin temperature is increased to 45 ℃ by infrared rays.

Skin cancer is one of the most common cancers in the world, and it’s the most preventable cancer. Skin cancer is the out-of-control growth of abnormal cells in the epidermis, the outermost skin layer, caused by unrepaired DNA damage that triggers mutations. These mutations lead the skin cells to multiply rapidly and form malignant tumors. The main types of skin cancer are basal cell carcinoma (BCC), squamous cell carcinoma (SCC), melanoma and Merkel cell carcinoma (MCC).

There may also be as many as 82,000 kinds of chemicals from personal care products that have made their way into the world’s oceans, according to a report by Marine Life, a marine conservation NGO. And one of the biggest and most permanent contributors to this massive pollution is sunscreen. An estimated 14,000 tons of sunscreen is believed to be deposited in oceans annually with the greatest damage found in popular reef areas such as Hawaii and the Caribbean.

Skin Cancer

Exposure to UV radiation is the primary cause of skin cancer

UV radiation has a range of effects on skin cells, affecting several metabolic pathways that together create a cellular microenvironment conducive to the development and progression of cancer. These effects may be modulated by genetic factors.

The Truth About Sunscreen:Its effects on us and the environment

The Truth About Sunscreen:Its effects on us and the environment

The benefits of sun-protective clothes aren't just for your health but for that of the environment, as well.What’s more, sun-protective clothing is the simplest way to stay safe; unlike sunscreen, you never need to reapply.