Horwang promises that the product, called Snowz, "will help you not to return to being dark."
"Eternally white, I am confident," she adds.
On Friday evening, Seoul Secret pulled the video from its online platforms and issued astatement.
"(We) would like to apologize for the mistake and claim full responsibility for this incident. Our company did not have any intention to convey discriminatory or racist messages," it said.