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Sunscreen

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Topic: #20
SUNSCREENS
Today, the use of sunscreens is widely recommended during sun exposure. Discuss the protection, from UV radiation damage, that is provided by sunscreen lotions.

Name: __________Chloe Funk________________
Class: __________Chem F2_________________
Teacher: __________David Wilkinson____________
Date: __________4th August 2014_____________
INTRODUCTION
Australia has the highest rate of skin cancer in the world. According to Australian Institute of Health and Welfare (2014), 3 out of 10 people who suffer from cancer in Australia died from skin cancer in 2010, and in 2010-2011, there were 10,457 patients with melanoma, which is one type of skin cancer, making up 1.2% of all cancer related hospitalizations in those years. There are always debates on the ability of sunscreens to prevent and protect skin from ageing and skin cancer. The purpose of this essay is to discuss the protection from ultraviolet (UV) radiation damage, with the use of sunscreen. This essay will include an overview of the different types of UV radiation and how it is responsible for skin damaging, secondly, how sunscreen works by combining organic ingredients and finally, how inorganic ingredients contribute in sunscreens.

DISCUSSION
UV Radiation
With two of three Australians estimated to suffer from skin cancer during their lifetime, Australia remains the skin cancer capital of the world (The Australian Photobiology Testing Facility at the University of Sydney 2007). The health system in Australia spends around $232 million annually for only skin cancer (AIHW 1998). Compared to visible light, UV radiation has a shorter wavelength (figure 1) which makes it invisible to the naked eye (Epstein and Wang 2014). The ozone layer of the Earth’s atmosphere filters most of the UV radiation before it reaches the surfaces. Without the ozone layer, skin that…...

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