Chinese authorities arrested several suspected North Korean agents, who police believe were sent to assassinate Kim Han Sol, the son of the late Kim Jong Nam, the young North Korean leader's half brother, Bloomberg reports, citing South Korean media.
A statement from KCNA said Kim was very impressed with the packaging.
Over the years many countries have stopped importing luxury goods into North Korea as a result of sanctions.
Mr Kim Han Sol, who grew up in Macau under Chinese protection as his father was in exile from North Korea, was last seen in March in a video posted on the website of humanitarian group Cheollima Civil Defence.
It was reportedly his second public appearance with wife Ri Sol-ju this month.
Ri, donning a black and white floral dress for the occasion, stood alongside the North Korean leader as he urged women more to be "more beautiful".
Kim toured the Pyongyang Cosmetics Factory with other senior officials, according to a report published by KCNA, the state news agency.
Ri married Kim in 2009 and is believed to have given birth to three children, according to South Korean intelligence.
Thae Yong-ho, who was the No. 2 official at North Korea's embassy in London before defecting to South Korea previous year, will speak before the House Foreign Affairs Committee on Wednesday, Rep. Ed Royce (R-CA) said on the panel's website.
Why did he visit a cosmetics factory?
While her public appearances are few and far between, she has recently been filmed celebrating a successful ballistic missile testing.
Tensions remain high on the Korean Peninsula after a series of North Korean nuclear missile tests and racheting up of rhetoric from Kim and US President Donald Trump.
Though he is better known for his photo ops at military installations and missile test sites, Mr Kim's visit to a cosmetics factory serves an important propaganda goal in telegraphing the legitimacy of Mr Kim's rule to the Pyongyang elite and middle-class.