Love it! I will buy another. I like the refreshing coolness of the menthol and peppermint oil. I find it comforting to use during “head discomfort” attacks and generally during the day to feel nasally refreshed. It states it lasts three months. I think it may last longer depending on frequency of use. It’s easy and quick to use. Just hold it in your nostrils and inhale deeply through the nose and feel the cooling sensation.