Finish for Ipe decking and mahogany door

Can anyone tell me what the best finish is for ipe decking (actually, t&g) to help it retain its color? I have been told Messemer’s is good. This is a covered porch in Georgia – 10 ft. deep so it doesn’t get baking sun all over, but the ends do get sun daily. Also have the same question for mahogany doors, which will never get direct sunlight.
Replies
for Ipe, messmer's or penofin. I believe they are similar but I've only used penofin. How often you apply it depends on how much sun it gets.