Hypertonic Sea Water Single Dose 20 ml from Aqua-Agua de Mar (Vizmaqua) is a natural sea water solution, presented in practical single doses that ensure hygienic and safe application. This hypertonic water is effective for cleaning nasal passages, removing mucus, and promoting natural decongestion. It is suitable for daily nasal hygiene for both adults and children, especially recommended in cases of congestion, colds, allergies, or dry environments. Its practical format allows for use anytime and anywhere. To use, simply open the single dose, insert the nozzle into the nostril, and press. It can be repeated as needed.