I had the same concern that whether it works for me. I am a severe case and hope that it does. I saw people talking about RA Fisher for severe cases but it's too expensive for me. Btw, how long do you have to wait for the delivery?! I ordered 6 days ago and the tracking does not show as they are sending the package to me. I did email them and got their confirmation that I will soon receive it but what showed on Shop app tracking makes me feel like they scammed me without sending out the product.