Preserving outside hardwood doors colour

[ellal]

Stripped back hardwood doors which had had a water based woodstain on it.

I believe it is teak, but don't know for sure.

The wood is a wonderful hue, but all the teak woodstains I can see are too dark.

Have noted the threads on oil/garden furniture so oiling doesn't seem the way to go.

Is there anything I can use to keep the original colour and prevent it silvering?

It's south facing so gets full sun most of the day.

Pic of colour posted below.

 

[slawit]

Sadolin have a range of products which might suit