Clothing rental is a hot new industry and retailers are demanding to get on board in hopes of attracting green shopper.

But is renting fashion actually more environmentally-friendly than buying it, and if so, how much more? Journalist and author Elizabeth Cline     1     this question and concluded that it’s not as     2     as it seems.

Take shipping, for example, which has to go two ways if an item is rented-receiving and returning. Cline writes that consumer transportation has the second largest carbon     3       of our collective fashion habit after manufacturing.

She writes, “An item ordered online and then returned can send out 20 kilograms of carbon each way, and     4     up to 50 kilograms for rush shipping. By     5     the carbon impact of a pair of jeans purchased from a physical store and washed and worn at home is 33.4 kilograms, according to a 2015 study by Levi’s.”

Then there’s the burden of washing, which has to happen for every item when it’s returned, regardless of whether or not it was worn. For most rental services, this usually means dry cleaning, a high impact and polluting     6    . All the rental services that Cline looked into have replaced perchloroethylene, an air pollutant that     7     cancers, still used by 70 percent of US dry cleaners, with alternatives, although these aren’t great, either.

Lastly, Cline fears that rental services will increase our appetite for fast fashion, simply because it’s so easily     8    . There’s something called “share washing” that makes people waste more precisely because a product or service is shared and thus is regarded as more eco-friendly. Uber is one example of this,     9     as “a way to share rides and limit car ownership.” and yet “it has been proven to     10     walking, bicycling, and public transportation use.”

Renting clothes is still preferable to buying them cheap and throwing them in the dustbin after a few wears, but we shouldn’t let the availability of these services make us too satisfied. There’s an even better step-that’s wearing what is already in the closet.