Flo CRS is a large volume nasal and sinus irrigation or wash that has been specifically formulated for severe sinus congestion (lasting more than 3 months in duration). Like Flo Sinus Care, Flo CRS is a non-medicated, preservative-free, isotonic irrigation solution for washing the nose and sinus cavities. It’s gentle to use and helps to thin mucus and clear irritants to temporarily relieve nasal and sinus congestion. Flo CRS is a Xylitol formulation that has a very low concentration of salts (sodium and potassium). For best results, use twice daily or as recommended by your healthcare professional. Flo CRS Starter Kit contains 4 x sachets of 7.7g pre-mixed powder (sodium chloride (0.75mg/mL when reconstituted), potassium chloride, xylitol) and 1 x Flo Wash Bottle.