Preservation of Bamboo Lances

[COLBILL]

All:
I am posting this for a friend. He has a few examples of early WWI British Cavalry bamboo lances. They also have their accompanying leather straps (white). The finish is wearing thin on the bamboo. Can anyone recommend the best way to preserve both the wood, bamboo and clean/preserve the leather. A dealer in England (where he purchased these years ago) recommended applying lacquer to the wood…but sounds harsh to me. How about RenWax? Any recommendations are greatly appreciated.
V/R
Bill

[Seigfried]

What sort of conditions are they stored in? I have two and I do nothing to them, they are fine. They don't have any 'finish', they just come as they are - does he mean that the smooth top layer of bamboo has worn away? He could wax them if he's that bothered.