Happy T-Day Kim and everybody else as well. Sorry there are no miracles in a can. I usually leave my teak raw and will sand it to keep it smooth and restore the honey color. If I really want to accentuate the beauty of the wood I will oil it. This wiil last a couple of months and then you need to sand and apply more oil. After a while the teak with oil will start turning black and it must be bleached and sanded. Varnish is pretty and requires even more maintenance. There is a product called Deks Olje. For awhile it was unavailable but I now see that it is for sale once again. This is by far my favorite oil type finish. I use the part 1 only. If I want a gloss finish I will use varnish. David
You might check out Cetol Natural Teak. Not really a paint, not really an oil, it protects the teak and only requires reapplying once a year (or so, you can let it go longer if you want), and doesn't require sanding before reapplication. So far (5 years) it doesn't turn black with time. I used it on the teak handrails and trim, and on the cedar trim, and have been happy with it.