The 16-year-old recently dropped her curling irons on her leg, causing a nasty-looking burn.
Kylie posted a picture of the injury on Twitter on Monday, and said that the burn was taking its own sweet time to heal.
She tweeted: "My burn is finally going away! Yay. Girls, don't underestimate the curling iron."
Kylie and older sister Kendall have been busy promoting their new clothing collection with US fashion brand Pacsun.
During a recent publicity appearance, Kendall, 18, revealed that their half-sisters Kim Kardashian, Kourtney Kardashian and Khloe Kardashian - who found fame in their 20s - wouldn't have coped with being in the spotlight when they were Kendall and Kylie's age.
Talking about her sisters' teen years, Kendall told People: "They lived it normally and then once they were already grown up, they went through what we're now going though."
Kendall added: "They even say to us: 'If I was in your position, I would not be able to handle it.'"
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