I got used to use Karvol when I was living in Uk. Unfortunately there are no products as effective as this one in Spain, so I used to buy a couple of boxes when I was on visit back to Uk. I can not travel there as much as I wish now, so I am glad I found a pharmacy that sells it through Amazon. For babies use it directly on the pillow or placing a handkerchief with the product spilled on it. For adults you can fill a glass a with (more or less) one finger of hot water, put a tissue into the water and spill the product over the tissue. Vapours are really good to relieve nose or ears congestion when not sleeping.
I will try to keep a Karvol box always in my medi kit. Really recommended.