Media

Don’t wash your jeans, freeze them; says Levi’s

5:11 AM, 24th May 2014
Levi Strauss & Co save water initiative
Levi Strauss CEO Chip Bergh says, customers can just freeze their jeans to clean them, instead of washing them.

SAN FRANCISCO, US: Levi Strauss & Co CEO Chip Bergh made headlines, saying Levi’s customers can just freeze their jeans to clean them, instead of washing them. The idea is that by washing their jeans very rarely, customers can save water - an issue Levi’s has become increasingly concerned about recently as they’ve tried to cut down on water consumption during their manufacturing processes. Some of their jeans come with instructions that tell customers to ‘wash them as little as possible’ and ‘throw them in the freezer to kill germs and stink’ instead.

Saving water is a laudable goal - and washing jeans when they don’t smell is indeed wasteful. But on the rare occasions that they start to stink, there’s a problem with Levi’s recommended solution, which has since become internet lore. The ‘germs’ Levi’s refers to are bacteria that live on your own skin and migrate onto denim over time, causing it to smell.

Washing the denim kills bacteria, as does raising its temperature to extremely high levels - at least 121°C. But freezing a pair of jeans, alas, is not likely to kill all the bacteria on them.

“We freeze bacteria at -20 or -80°C and can then regrow them,” said Julie Segre, Researcher, National Human Genome Research Institute who studies the bacteria that live on human skin.

Sure, overnight freezing might kill most of the bacteria. But if some remain, they’d likely be able to recolonize the denim quickly after it warmed back up. That’s because the dirt and dead skin cells present in the jeans - which serve as the bacteria’s substrate - are left entirely intact by freezing.

Segre, in fact, thinks removing these substances is actually more important than killing bacteria for eliminating jeans’ odour - which is why freezing just isn’t effective, and old-fashioned washing is.

For their part, Levi’s spokespeople have even admitted that the freezing idea originally came from designers, and they have no scientific evidence that it works. Of course, their efforts to reduce water use in the production of their denim are admirable, and they’re probably right in telling customers that they don’t need to wash their jeans very often, especially if they don’t smell.

But when they do start to stink? “I wash my clothes to remove the dirt and to render them clean,” said Segre.

 

© Vox News

0 Comments

Login

Your Comments (Up to 2000 characters)
Please respect our community and the integrity of its participants. WOC reserves the right to moderate and approve your comment.

Related News


Dow to build reverse osmosis membranes plant in Saudi Arabia

RIYADH, SAUDI ARABIA: Dow Chemical Company will invest in a world-class manufacturing facility for Dow Filmtec reverse osmosis (RO) elements in Saudi ...

Read more
Gevo, South Hampton to build hydrocarbon processing demo plant

ENGLEWOOD, US: Gevo Inc and South Hampton Resources Inc, a subsidiary of Arabian American Development Co, will build a hydrocarbon processing demonstr ...

Read more
Ecolab to acquire Nalco for $8 billion

· The merger will help in capitalizing on mega trends and participation in emerging markets. · Ecolab to pay approximately $5 ...

Read more
News contrast agents to detect bacterial infections

ATLANTA, US: A new family of contrast agents that sneak into bacteria disguised as glucose food can detect bacterial infections in animals with h ...

Read more
Lanxess to hike menthol capacity at Krefeld-Uerdingen plant in Germany

LEVERKUSEN, GERMANY: Lanxess started work on expanding its menthol facility, capacity of the Krefeld-Uerdingen plant, in Germany to be doubled to meet ...

Read more
Solvay gives €10 million in a financing round to Plextronics

BRUSSELS, BELGIUM: Solvay has provided €10 million ($15 million) in a financing round to Plextronics, a printed electronics company. The financin ...

Read more
Copyright © 2014. Kimberlite Softwares Pvt. Ltd., India. All rights reserved.
World of Chemicals.