A variety of industries have been racing to eliminate toxic substances from their products, and the t-shirt screen printing business is no exception.

California entrepreneurs Peter Imai and David Whitaker have taken advantage of this trend by creating Ecoprintworks.com, a site that sells toxin-free t-shirts.

Most t-shirts use PVC (polyvinyl chloride) plastic-based ink— a dangerous proposition since PVC is known to cause everything from immune system suppression to cancer. Ecoprintworks.com, however, uses a 100 percent water-base, solvent-free ink called Permaset Aqua. In addition to being toxin-free, Imai and Whitaker claim that Permaset Aqua is more durable and soft to the touch than PVC-based ink.

Ecoprintworks.com has received a significant chunk of its business from other concerned companies, including yoga shops and eco-fashion brands. As companies continue to jump on the environmental bandwagon, Ecoprintworks.com and businesses like it will undoubtedly garner even more customers.