My husband has bad hygiene: advice?

I have been married for four years. Everything was good at first, but now it doesn’t seem that my husband wants to be clean. He works 10 hours a day outside working with forklifts and only showers once a week. It has begun to take a toll on our social life. I’ve had friends comment on how dirty he looks, and now I don’t want to be seen in public. I’ve told him countless times. My sexual interest is O at this point.