At the top of the forum you will see a link called chhas's law. It is very helpful for new tub owners.
You can use a foam down product, but it will only retard the foam, it will not remove what is causing it. It is very common with new tubs to have this issue. Between being new to water chemistry, getting a lot of use and all the oils coming off the new plastics. Other than foam, have you been enjoying your new tub?