I just bought two wooden rolling pins, and after washing (a quick dip in dishwater and wipe down) the one I used is much rougher and has darkened a lot in colour. Is there some food-safe oil I can use on it to make it smoother? Is this normal? And why would there be such a big colour change?

[The darker one was used and washed today – the light one hasn’t been washed yet](https://i.redd.it/iuth3r7ws8s31.jpg)

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