Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


android tablet pc

Home > News > Particles in sunscreen could be toxic if accidentally eaten

June 26th, 2010

Particles in sunscreen could be toxic if accidentally eaten

Abstract:
Tiny particles in sunscreens could be toxic to cells in the gut if they are accidentally eaten, researchers have shown. They say that nano-particles of zinc oxide may be more likely to cause harm than conventional zinc oxide.

Nano-particles, very tiny particles barely 1/50,000 the breadth of a human hair, are used in many products including cosmetics and sunscreens. But there has been concern about how safe they are, because they can act differently to larger particles of the same substance.

Zinc oxide is a common ingredient of sunscreens because it can block the sun's rays. But traditional zinc-based creams tend to leave white residue on the skin, which some people find unsightly. Nano-particles of zinc oxide don't leave a residue, so creams containing nano-particles have become a popular alternative.

The question is whether the tiny particles can cause any harm. Zinc is known to cause damage to the lungs if it's inhaled as dust. Some doctors worry about what could happen if children accidentally eat sunscreens containing nano-particles of zinc.

New research has looked to see what happens to cells from the human gut if they come into contact with zinc oxide nano-particles. The research was carried out using cells grown in the laboratory, so it's not a direct test of what might happen if the substance is eaten.

Source:
guardian.co.uk

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

A breakthrough in imaging gold nanoparticles to atomic resolution by electron microscopy August 22nd, 2014

Ultra-short pulse lasers & Positioning August 21st, 2014

Malvern’s Dr Alan Rawle talks TLAs in plenary lecture at Particulate Systems Analysis conference August 21st, 2014

Water window imaging opportunity: A new theoretical study elucidates mechanisms that could help in producing coherent radiations, ultimately promoting high-contrast imaging of biological samples August 21st, 2014

Announcements

A breakthrough in imaging gold nanoparticles to atomic resolution by electron microscopy August 22nd, 2014

Ultra-short pulse lasers & Positioning August 21st, 2014

Malvern’s Dr Alan Rawle talks TLAs in plenary lecture at Particulate Systems Analysis conference August 21st, 2014

Water window imaging opportunity: A new theoretical study elucidates mechanisms that could help in producing coherent radiations, ultimately promoting high-contrast imaging of biological samples August 21st, 2014

Safety-Nanoparticles/Risk management

Sunblock poses potential hazard to sea life August 20th, 2014

Analytical solutions from Malvern Instruments support University of Wisconsin-Milwaukee researchers in understanding environmental effects of nanomaterials July 30th, 2014

NNCO Announces an Interactive Webinar: Progress Review on the Coordinated Implementation of the National Nanotechnology Initiative 2011 Environmental, Health, and Safety Research Strategy July 23rd, 2014

Development of an interactive tool for the implementation of environmental legislation for nanoparticles manufacturers July 4th, 2014

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More














ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project







© Copyright 1999-2014 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE