I've noticed ever since I got bio washing powder (I usually use liquid but decided to get washing powder for a change), I've had nothing but sinus problems. I am always stuffy and at first I thought it was dust as I do have an allergy to that but my house is hoovered every day as well as dusted as well. When I first used it I did use too much powder and I swear it felt like the cold has come on all at once my eyes was streaming and nose was itching and very bunged up. I haven't done that since! I don't use fabric softener to see if that helps but it hasn't. I use less than 1tbsp of powder, plus I put it on an extra rinse cycle and nothing is working. I don't get any skin allergies from it. Has anyone else had issues with just their sinuses? The entire household has stuffy nose too so I'm wondering whether it is something else. Coincidence it all started when I started using the washing powder.