Sunscreens

‘What’s Really in our Sunscreens?’ TV3, Tuesday 27th July, 8pm.

If you miss it you can view the episode online after the airing date using the link below –

http://www.tv3.co.nz/Shows/Reality/WhatsReallyInOur/tabid/778/Default.aspx

While wer’e on the subject of sunscreens ….

Below is a graph showing the spectral transmission of a sunscreen we tested, soon after application on to a UV-transmitting quartz filter. The upper panel shows the unfiltered spectrum of sunlight, and the spectrum filtered with an SPF30 sunscreen. The lower panel shows the transmission deduced from the ratio of those two measurements.  This particular sunscreen blocks just about all UV radiation, including the most damaging UV-B region (280-315 nm) and longer wavelength  UV-A component from 315 to 400 nm.

Sunscreen Transmission

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