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Nanotechnology sunscreen filters out dangers

Nanotechnology sunscreen filters out dangers

Most kiwis know it, but many around the globe may not – We have a big hole in our Ozone layer, and for New Zealand beach-goers and outdoor adventurists it’s bad news for sun damaged skin and melanoma. New Zealand has extremely high rates of skin cancer due to both our love of the outdoors and the fact that there is far less ozone for UV light to filter through before it hits our shores.

We’ve hit the holiday season, and it’s fair to say most of us will be out in the sun over Christmas. A quick message from the team at Revolution Fibres – stay safe, wear sunscreen and a hat, and stay out of the sun during it’s peak hours in the middle of the day. The titanium dioxide and zinc oxide are the compounds in sunblock that absorb ultraviolet light, and give sunblock it it’s white hue. While the protection these compounds offer is fantastic, some research into their effects on the human body once absorbed into the skin tell a different story.

Here’s an article we loved about a new nanotechnology based sunblock using an alternative to the compounds mentioned above. Here’s a little exerpt:

Bioadhesive nanotechnology provides safer delivery method

A commonly used sunscreen padimate O (PO), which is related to the better-known sunscreen PABA, was encapsulated inside a nanoparticle, a minute molecule often used to transport drugs and other agents into the body.

The BNP containing PO was tested on pigs for penetration into the skin. A control group of pigs received the PO alone, not encapsulated in a nanoparticle.

Although BNPs are larger than skin pores and, therefore, unlikely to pass through, it was thought that they could still pass through the larger hair follicles, beyond the surface layers of skin, through blood vessels in the deeper layers and into the bloodstream.

However, not only did the PO inside the nanoparticle remain on the skin’s surface, but the BNPs remained outside the hair follicle openings, prevented, apparently, by their adhesive properties that caused them to stick to the skin’s surface.

Further tests showed the BNPs to be water resistant, remaining on the skin for a day or more, yet easily removed by towel wiping. They also disappeared within days through natural exfoliation of the surface skin.

Read the full article here.

Enjoy yourself safely this Christmas and New Year. We wish you all the best.

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