How to safely reuse glass bottles to store oils

Question

I like to reuse glass bottles and jars in my kitchen in order to create less waste. Recently, I bought a large quantity of olive oil which I would like to use by pouring some of it in an empty 500ml vodka bottle:

I have a few concerns, however, since the oil I bought came in a dark glass container which I can only assume is there to protect it from light. I also wonder if it would be fine to simply top off the oil in the bottle once it gets low or if I should clean the bottle every time to ensure it remains safe. Basically, how can I do this safely?

Answer 1

Yes, it is safe.

Just wash the bottle with dish soap and hot water.

Unless you do not use the oil in the new bottle frequently, degradation from light should not be an issue; you could store that bottle in a cupboard when not in use (or get a dark glass booze bottle)

Personally, I would try to use a small bottle than a 750ml bottle.