In K-1 Premium 2006 Dynamite, Akiyama fought Kazushi Sakuraba in the main event. During the match, Sakuraba called to the referee saying "[Akiayama is] Slippery!" Akiayama went on to win the match with a referee stoppage. This created a controversy amongst MMA fans in Japan, assuming Akiyama was using some sort of body oil or lubricant, banned in K-1 rules.

But at this moment, Akiyama answered to questions about the oil in the interview as follows: "I have no idea why Sakuraba felt slippery. It may be my sweat, as I sweat a lot always and it often drips off my body."

On January 11, Akiyama and FEG (the parent company of K-1) held a press conference during which Akiyama said he used Olay lotion prior to the fight claiming that the lotion was used to treat a worn gi.

http://en.wikipedia.org/wiki/Yoshihiro_Akiyama#K-1_HERO.27S