homemade preshave oil

I found on youtube a preshave oil reciepe. I figured what the hell so I got castor oil $2.75, Extra virgin olive oil already had, 3 oz. bottle 1.00 and essentials oil Lavender $12.

Reciepe goes:
3/4 of the bottle Castor oil
1/4 of EVO
10 drops of Lavender

So if it doesnt work well then i got the Castor oil if the kids can't go to the bathroom, EVO i cook with and lavender I will try to make my own shave soap. If any body has tried something similar or thinks something should be added comments are welcomed.

I would add maybe 3 drops of the Lavender at first. You don't want it too strong... Can always add more (assuming there's no heating involved). :)