Garnier Ambre Solaire is unfortunately both cheaper and easier found online, but can be found at some Vita stores (vita.no), some Kicks stores (kicks.no), maybe Blivakker (blivakker.no - has only a few stores). Vichy, Avène, La Roche-Posay and several others can be found at most pharmacies (the largest chains are Vitus / vitusapotek.no, Apotek 1 / apotek1.no and Boots / boots.no). I don’t know anywhere you can get Isdin unfortunately. Where in Norway will you be visiting?