What natural oil is highly transparent and does not darken the wood? I want it for wooden toys for children. The goal is to protect the wood while keeping the wood grains visible or even make them more contrasting. I use mainly cherry wood or walnut.
So far my best finding is coconut oil. But even that oil darkens the wood considerably. Linseed oil makes it dark and has too yellow-greenish pigment. Tung oil is way too dark and stinks. Rapeseed oil has not a pleasant scent either.
Alternatively, what natural healthy substance you can recommend for that goal - I do not have to stick to oil.