The tag won't hide actual copy written content that maybe you have on your site, including equivalent item descriptions for various things. Google will only study through your hreflang tag that information “a” is actually a translation of content “b.” By default you should go away this aspect enabled, as https://addons.prestashop.com/pt/seo-referenciamento-natural/30904-tags-automaticas-hreflang-e-tags-canonicas-seo.html