This discussion clarifies the HSN codes and GST rates applicable to non-woven face masks. While HSN code 62104090 with a 5% GST rate is mentioned, HSN code 30059040 with a 12% GST rate is also suggested. Another user suggests HSN code 63079090 with a 5% GST rate. The thread also touches upon HSN codes and GST for hand sanitiser and other miscellaneous items.
To find an HSN code for a product, first, select the Chapter, then select Section and filter the subheading to finally get the product code. I hope this helps.