Kylie Jenner decided to create her Lip Kit By Kylie range after she had to use a brown eye liner to achieve perfect lips.
The 'Keeping Up with the Kardashians' star had to turn to a brown eye makeup product she owned in order to create the desired shade for her plumped pout, and it was her cosmetic experiment which ultimately inspired her own lip products.
Speaking to InStyle magazine about the versatile product about her eureka moment, she said: "I actually used a brown eyeliner as a lip liner. At the time, I couldn't find a decent brown lipstick anywhere. So I decided to take matters into my own hands and create my own - that way, I can never run out of my favourite colour."
The 18-year-old reality star - who recently became the ambassador for the sportswear brand Puma - also revealed her Lip Kit By Kylie are inspired by 90s style trends.
She explained: "Lipstick is such a passion of mine - I'm really into 90s shades, so I wear loads of mauve, nude and brown tones."
Kylie continues to tease fans that her sixth 'Kylie Cosmetics' collection - which sold out within 15 minutes - will be expanding, as she recently took to Twitter asking people's what their favourite addition would be, and has since added four more shades - Posie K, Koko K, Mary Jo K and 22.
She said: "I'm creating a whole load of new colours for my Lip Kit line, but it's still top secret."