I've used a few of these so far including some from reputable companies like T&H and Gentlemen's Refinery prior to applying my creams. I actually think my shaves are worse with them! I don't notice any less drag or increased slickness and my face tends to break out the next day. Plus, I am a bit concerned about what the oil does to the hairs of the brush. I have some pure jojoba oil I will try next, but so far these oils have fallen into the broad YMMV category; that is, try them but don't assume your shaves will be better.