Featured Research

from universities, journals, and other organizations

Fighting wrinkles with lasers scientifically unraveled

Date:
October 25, 2010
Source:
Eindhoven University of Technology
Summary:
Laser pulses enable skin rejuvenation, as research in the Netherlands has shown. Laser treatment introduces heat into the skin. Under the influence of heat shocks of 45C, skin cells produce more collagen. This is the protein that gives the skin its firmness and elasticity.

Laser pulses enable skin rejuvenation, as research at Eindhoven University of Technology (TU/e) has shown. Laser treatment introduces heat into the skin. Under the influence of heat shocks of 45C, skin cells produce more collagen. This is the protein that gives the skin its firmness and elasticity. Susanne Dams describes this process in the dissertation for which she gained her PhD degree from the Biomedical Engineering Department at TU/e.

Related Articles


Laser treatment is quite common in the practices of beauticians and dermatologists. Although the technique has been widely used for many years, its impact and the underlying processes are still to be unraveled. The effect of light has been studied before, but according to researcher Susanne Dams there is still little understanding about the effect of the heat introduced by a laser. Research performed by Dams now provides a better understanding of this process.

The researcher first tested the effect of heat on cell cultures, by giving them heat shocks of 45 and 60C without a laser. This excluded possible effects generated by the laser light. Subsequently, she conducted similar tests on pieces of excised human skin, and at a later stage she heated pieces of skin with a laser. The results of these tests were in line with the earlier tests.

She showed that the heat shocks led to increased production of collagen, which is considered to be one of the important factors in skin rejuvenation. The production of this protein by the human body declines after the age of 25, causing wrinkles to form and making the skin sag. The best effect was found to result from a heat shock of 45C lasting eight to ten seconds. It was also shown that higher temperatures cause damage to the skin cells. Dams established in her tests that heating cells in culture for two seconds at 60C results in cell necrosis.

The question of how long the skin-rejuvenating effect of the laser treatment lasts remains unanswered for the moment. Dams discovered that after a heat shock the gene expression (the precursor to the formation of the protein) returns to its normal level after 48 hours. However, the extra collagen produced as a result of the increased gene expression contributes to skin rejuvenation for a longer period.

Although this study suggests that it is heat rather than light that rejuvenates the skin, the laser still remains the instrument of choice in the opinion of Dams. "A laser allows treatment with great precision, because it can specifically heat specific elements in the skin while leaving the rest unharmed. This allows the optimal effect to be achieved."

Dams conducted her research in cooperation with Philips Research Eindhoven.


Story Source:

The above story is based on materials provided by Eindhoven University of Technology. Note: Materials may be edited for content and length.


Cite This Page:

Eindhoven University of Technology. "Fighting wrinkles with lasers scientifically unraveled." ScienceDaily. ScienceDaily, 25 October 2010. <www.sciencedaily.com/releases/2010/10/101021141000.htm>.
Eindhoven University of Technology. (2010, October 25). Fighting wrinkles with lasers scientifically unraveled. ScienceDaily. Retrieved December 20, 2014 from www.sciencedaily.com/releases/2010/10/101021141000.htm
Eindhoven University of Technology. "Fighting wrinkles with lasers scientifically unraveled." ScienceDaily. www.sciencedaily.com/releases/2010/10/101021141000.htm (accessed December 20, 2014).

Share This


More From ScienceDaily



More Health & Medicine News

Saturday, December 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

The Best Tips to Curb Holiday Carbs

The Best Tips to Curb Holiday Carbs

Buzz60 (Dec. 19, 2014) It's hard to resist those delicious but fattening carbs we all crave during the winter months, but there are some ways to stay satisfied without consuming the extra calories. Vanessa Freeman (@VanessaFreeTV) has the details. Video provided by Buzz60
Powered by NewsLook.com
Sierra Leone Bikers Spread the Message to Fight Ebola

Sierra Leone Bikers Spread the Message to Fight Ebola

AFP (Dec. 19, 2014) More than 100 motorcyclists hit the road to spread awareness messages about Ebola. Nearly 7,000 people have now died from the virus, almost all of them in west Africa, according to the World Health Organization. Video provided by AFP
Powered by NewsLook.com
Researchers Test Colombian Village With High Alzheimer's Rates

Researchers Test Colombian Village With High Alzheimer's Rates

AFP (Dec. 19, 2014) In Yarumal, a village in N. Colombia, Alzheimer's has ravaged a disproportionately large number of families. A genetic "curse" that may pave the way for research on how to treat the disease that claims a new victim every four seconds. Duration: 02:42 Video provided by AFP
Powered by NewsLook.com
The Best Protein-Filled Foods to Energize You for the New Year

The Best Protein-Filled Foods to Energize You for the New Year

Buzz60 (Dec. 19, 2014) The new year is coming and nothing will energize you more for 2015 than protein-filled foods. Fitness and nutrition expert John Basedow (@JohnBasedow) gives his favorite high protein foods that will help you build muscle, lose fat and have endless energy. Video provided by Buzz60
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins