The Amazon (No, not the .com) products for our teak. As a matter of fact, I just ordered a set. We first use Amazon Teak cleaner. Then the next day, teak prep, then last a good coat of the Amazon Teak oil. When done it will last a few years! I LIKE EASY and long lasting.
For our head (where we shower) we used "Deks Olje" part 1 only. Looks mat finish like oil, but seals the wood. We did it once in 01 (or before) and have not had to re-do it since.
Greg