UNDERSTANDING THE UV INDEX

The UV Index (UVI) is a standardised measurement of UV radiation levels, which can be used to understand the levels of sun damage that your skin may be exposed to. The UV Index measures both UVA and UVB rays, which can impact your skin in different ways.

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UVA RAYS

95% of UV rays that reach the earth’s surface, are UVA rays. It is important to understand that UVA rays have the ability to penetrate clouds and glass. These invisible sun rays can penetrate the dermis , the deeper layer of skin that protects against trauma and maintains your skin’s integrity, leading to the production of free radicals as well as collagen degradation.

UVB RAYS

UVB rays can damage the epidermis, which is the outer layer of skin that is responsible for your skin tone and waterproof protection. Although UVB rays don’t penetrate as deep as UVA, overexposure can cause common visible changes like sunburnt skin. Damage from UVB radiation can also impact your skins cellular DNA, which may lead to skin cancer.

PROTECT YOUR SKIN

It’s important to have a good skin care routine to help protect your skin from UVA and UVB rays. Where the UV Index predicts levels of UV radiation at moderate or higher, it’s recommended that you follow sun safety practices in addition to using a broad spectrum sunscreen; limit midday sun exposure, seek shade where possible, wear protective clothing and hats. Keep in mind that SPF strength is dependent on your skin, with fairer skin types often requiring higher levels of SPF protection. If you are unsure about which SPF is right for your skin we recommend you speak to your dermatologist or pharmacist.

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