Sniffing Goldenseal powder into the sinus through the nostrils can help to clean out the sinus cavity and boost healing. Only a very small amount is used. Sniff lightly and slowly. This can be done 3 times a day in an acute phase and eased off as the sinuses heal. Goldenseal is a Root and is the king of tonics to mucous membranes, anti staphylococcus, anti biotic, anti microbial and anti fungal.