It depends: If you're using thin-set mortar, then gloves and a mask would be advised, while epoxy needs protection from skin contact only (though these safety precautions could still apply). It's best to wear gloves and goggles while using polyurethane to avoid inhaling any of the toxic fumes that it releases. This is when there are no more numbers or bullet points in this section of long-form content. The next paragraph will be a new one that may include hyperlinks and images with captions (if applicable).