Thank you both for your help..

I know that there are many ways to keep a slave aroused...and I am so experienced in order to make them have a hardon...in just a few seconds!!

I am asking about cremes...because I read a story on bdsmlibrary...in which..a mistress had "put" a creme on the slave's cock..and that made him being in agony...and aroused.

If anybody has any idea..or any advise....I would be glad to hear it!!

Thanks,
Master egwmilaw