Grey's Anatomy actress Jessica Capshaw (Arizona Robbins) and movie star Jessica Alba might not be the biggest fans of Gwyneth Paltrow right now — after Gwyneth criticized a company in which they both have a personal stake!

Gwyneth's latest post on her lifestyle newsletter, Goop — titled "The Dirty on Getting Clean" — is all about cleaning products that profess to be free of harmful chemicals.

And the post gives a C grade to the Honest Multi-Surface Cleaner made by The Honest Company — a company co-founded by Jessica Alba and Christopher Gavigan, Jessica Capshaw's husband.

"I was shocked to realize that the U.S. government really doesn't regulate the toxic chemicals we all use everyday, on our bodies and in our homes," Gwyneth writes from Hong Kong. "Many of the 'clean' products I proudly use (and have even touted on Goop) have turned out to be a product of marketing, rather than actually safe."

Granted, Gwyneth is only writing a preface to a much longer post that she probably didn't write herself. And that article cites grades and scores by the Environmental Working Group. (You can read its report on the Honest product here.) So Gwyneth probably didn't realize there was a Hollywood connection.

But The Honest Company's all-purpose cleaner is listed under "What We Were Using at Goop" as opposed to "What We Are Using Now" — along with its "C" grade — so that can't be great for business for the Alba-Gavigan collab.

Maybe if the EWG's findings weren't fair, Chris and Jessica and The Honest Company will publish a rebuttal!

At least we can all agree that Jessica Capshaw's Grey's performance is above reproach, right? Gwyneth better not disagree with that!

Sources: GoopEnvironmental Working Group

Dan Clarendon is an assistant editor at Wetpaint Entertainment. Follow him on Twitter and Google+!