Yes, it is safe. Nosk is certified by the FDA in America, CE in Europe and Kitech (Korea Institute of Industrial Technology).

However, if you have recently undergone any nasal/nose surgery or suffered from any condition related to the nose, nasal cavity or sinuses including but not limited to; sores, lesions, bleeding, infections, swelling, facial pain/pressure, discharge, fever, and or any sleeping or breathing disorders such as sleep apnea- then it recommended that you consult a physician before using Nosk.

No, the filter is not replaceable. Nosk has to be discarded once its life is over.

NOSK is not generally recommended for use for over 12 consecutive hours.

Reuse of Nosk is not recommended without cleaning the filter under running water.

NOSK is designed with your comfort in mind, however if you experience any discomfort in breathing or otherwise, then remove Nosk immediately and discontinue future use.

As per independent tests done in lab, the efficiency of Nosk in filtering the particulate matter is upto —

PM 10 — 100%
PM 2.5 — 96.3%
PM 1     — 96.1%

Nosk is designed to only block the harmful pm 10/pm 2.5/pm 1 particles. It cannot modify your sense of smell since it does not contain odour neutralising chemicals. This is a chemical free product and hence it is suitable for a wider range of users.

NO. Nosk cannot be used while sleeping.

Yes, it’s washable and ideally it should always be washed after every 2-3 hours of usage.

Washing is pretty easy- Just wash it under a tap for 2-3 seconds.

Each piece of Nosk lasts upto 12 days in medium pollution ( when AQI is around 300 )