Teak oil is one of the oldest and in many ways easiest methods of maintaining the natural look to teak.
More choices, linseed or tung oil.In general, tung oil is a more refined version of linseed oil.The higher quality/price is an individual call depending on the application.
Our main concern here is the various additives including pigments, UV filters, and mildew retardants.The additives are a must here on the Emerald Coast and anywhere you have the combination of sun, heat, humidity, and sea air.The choices should be based on the exposure to the elements the wood will be getting, with the higher concentrations of additives and corresponding darker pigmentation for any wood which will be exposed a great deal of the time.
Characteristics:
Gives the wood a matte finish without shiny spots. Requires recoating periodically, 1-3 months depending on exposure factors. While teak oils, when properly applied and maintained resist and displace water they do not completely eliminate it's getting into the wood. (works well but requires frequent maintenance or will tend to turn black and degrade rapidly)A big plus is that unless the wood is very rough, no sandingshould be required.