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The Chemistry of Sunscreen

In: Science

Submitted By ericamak
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The Chemistry of Sunscreen
My written study report is about sunscreen where we can usually find it in some beauty shops and drugstores. Sunscreens in different brands would have different properties and selling points.
The main function of sunscreen is to protect our skin from the exposure of Ultra-violet (UVA and UVB) which can cause severe erythema (sunburn) and skin cancer. Some of them also claimed to moisturize and brighten up our skin. Normally, people who have a higher consciousness on their skin condition would apply sunscreen on their face and body frequently whenever they go outdoors. Athletes are also the main users of sunscreen as they often do exercises under sunlight over a long period of time; therefore they have to apply sunscreen to prevent long-term damage on their skin. It is stated that only a tiny amount of sunscreen is enough to reach the desire effect and protection.
The prices of these kinds of lotion vary a lot as it depends on their SPF(Sun Protection Factor) rating as well as PA degree, ranging from $60 to $250+. This product is popular worldwide especially in United States as people nowadays often do outdoor activities while they are highly aware of their health.
The main reason of choosing sunscreen as study Project topic is that I am curious about how do the chemicals inside sunscreen can protect us from sun burn and the potential risk of applying it. As far as I am concerned, some of the chemicals inside sunscreen are nanoparticles. Would there be any differences in terms of properties between the normal size of particles and Nano-sized particles? This report will look into it step by step.

Main Content 1. The main chemicals found in Sunscreen
Sunscreen mainly contains Oxybenzone (C14H12O3), Zinc Oxide (ZnO) and Titanium dioxide (TiO2). Sunscreen can be divided into two types, which are chemical and physical sunscreen....

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