When I rub oil on my feet, whatever oil is left over, I rub into my hands.
When I use oil on my feet, there's a little excess, so I just rub it into my hands.
ーWhen I rub oil on my feet, whatever oil is left over, I rub into my hands.
「足にオイルを塗るとき、余ったオイルを手に塗ります。」
rub oil で「オイルを擦り込む・塗り込む」
feet「足」
hand「手」
left over「余りの・残りの」
ーWhen I use oil on my feet, there's a little excess, so I just rub it into my hands.
「足にオイルを使うとき、少し残るんだけど、それは手に塗っています。」
excess「過多・超過」
ご参考まで！
カナダ 
