It sounds to me that the biggest action step is educating the public. I would hire a writer to spread the word. Contribute to as many Health and Wellness blogs and publications as you can. Make sure every time you contribute an article it includes the website or "Learn more about Vinchy at GoVinchy.com" You should still do everything you can to increase your inbound traffic, whether it is through social media, paid ads, or SEO, but if public awareness if the obstacle you need to start informing and educating. 

Last but not least, consider video. Video is at the top of the sales funnel and is a very easy way to educate consumers. If you consider the number of search results you get for "Vichy" on Google vs the number of search results on YouTube for "Vichy", I would bet your chances are better on YouTube. Definitely worth considering.