Navigation Links
Making a common cosmetic and sunblock ingredient safer
Date:9/25/2013

Using a particular type of titanium dioxide a common ingredient in cosmetics, food products, toothpaste and sunscreen could reduce the potential health risks associated with the widely used compound. The report on the substance, produced by the millions of tons every year for the global market, appears in the ACS journal Chemical Research in Toxicology.

Francesco Turci and colleagues explain that titanium dioxide (TiO2) is generally considered a safe ingredient in commercially available skin products because it doesn't penetrate healthy skin. But there's a catch. Research has shown that TiO2 can cause potentially toxic effects when exposed to ultraviolet light, which is in the sun's rays and is the same kind of light that the compound is supposed to offer protection against. To design a safer TiO2 for human use, the researchers set out to test different forms of the compound, each with its own architecture.

They tested titanium dioxide powders on pig skin (which often substitutes for human skin in these kinds of tests) with indoor lighting, which has very little ultraviolet light in it. They discovered that one of the two most commonly used crystalline forms of TiO2, called rutile, easily washes off and has little effect on skin. Anatase, the other commonly used form, however, was difficult to wash off and damaged the outermost layer of skin even in low ultraviolet light. It appears to do so via "free radicals," which are associated with skin aging. "The present findings strongly encourage the use of the less reactive, negatively charged rutile to produce safer TiO2-based cosmetic and pharmaceutical products," the researchers conclude.


'/>"/>

Contact: Michael Bernstein
m_bernstein@acs.org
202-872-6042
American Chemical Society
Source:Eurekalert

Page: 1

Related biology news :

1. Scientists discover cosmic factory for making building blocks of life
2. New cell component important to tea and wine-making
3. Not the end of the world: Why Earths greatest mass extinction was the making of modern mammals
4. Making the brain take notice of faces in autism
5. Geoscientists unearth mineral-making secrets potentially useful for new technologies
6. New study reveals important role of insulin in making breast milk
7. New catalyst could cut cost of making hydrogen fuel
8. Making hydrogenation greener
9. Women reject sexually promiscuous peers when making female friends
10. Elevated carbon dioxide making arid regions greener
11. Flies reveal kidney stones in-the-making
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/6/2016)... 6, 2016 Securus Technologies, a leading ... for public safety, investigation, corrections and monitoring, and ... a five (5) year funding commitment by Securus ... the rehabilitation and reentry support to more inmates ... in 2004, the Prison Entrepreneurship Program (PEP) is ...
(Date:12/2/2016)... , December 1, 2016 ... type (Fingerprint, Voice), Future Technology (Iris Recognition System), ... Region - Global Forecast to 2021", published by ... 442.7 Million in 2016, and is projected to ... a CAGR of 14.06%.      (Logo: ...
(Date:11/30/2016)... , Nov. 30, 2016 Not many of us realize that we ... of recovery so we need to do it well. Inadequate sleep levels have been ... blood pressure, stroke, diabetes, and even cancer. Maybe now is the best ... that could help them to manage their sleep quality? ... ...
Breaking Biology News(10 mins):
(Date:12/8/2016)... ... December 08, 2016 , ... ... for their exceptionally efficient human mesenchymal stem/stromal cell (hMSC) expansion medium. ... media products engineered to radically streamline culture processes, minimize processing time, significantly ...
(Date:12/8/2016)... TAMPA, Fla. , Dec. 8, 2016 /PRNewswire/ ... biopharmaceutical company that discovers, develops and plans to ... today that its shares of common stock were approved ... stock will begin trading on the OTCQX, effective ... To qualify for the OTCQX market, companies must ...
(Date:12/7/2016)... ... December 07, 2016 , ... ... I/II dose escalation and expansion clinical trial for its lead drug candidate, AC0010, ... purpose of the trial was to determine the safety, antitumor activity, and recommended ...
(Date:12/7/2016)... /PRNewswire/ - Zenith Capital Corp. ("Zenith" or the "Company") announces webcast ... the Company,s Annual and Special Meeting. The ... on Thursday, December 15, 2016 at Mount Royal ... 4825 Mount Royal Gate SW, Calgary, Alberta ... and management information circular, containing the matters to be considered ...
Breaking Biology Technology: