The only exception to that rule is olive oil. It may be liquid at room temperature but in its long cure time, the longevity is exceptional.
However, soapers have learned to be balanced in its use. Too much & you risk lowering your bubbles, too little & you don't get the benefits of the hard bar. Also, using the least of the quality of olive oil, pomace (if you can find it at a "comfortable for you" price, or you can get the same kind of price for rice bran oil), this is even better! A better, harder, milder bar after a good cure period. Say, six months. I guarantee it!