With FLO Sinus Care treating sinus congestion is simple, painless and effective. FLO Sinus Care is a non-medicated, preservative-free nasal and sinus wash which can help relieve congestion as a result of: - colds, flu, sinusitis - hayfever and allergies - CPAP therapy - Post operative care FLO Sinus Care is formulated to closely mimic the body's own tissue fluids, so treatment is gentle to use yet effective. Using a sinus wash regularly like FLO Sinus Care washes away irritants in the nose and can also improve the effectiveness of medicated nasal sprays such as nasal corticosteroid / decongestant / allergy sprays. Simpler better breathing with FLO! Clears congested noses quickly. FLO - Advanced formula. Simple Solution. The Natural Preservative Free Nasal Saline Wash.