Tyga "had a lot to do" with the success of Kylie Jenner's make-up brand.
The 28-year-old rap star dated the American make-up mogul on and off between 2014 and 2017, and Tyga has now claimed that some of her success can be linked back to himself.
He explained: "I had a lot to do with all that, which I don't need credit for.
"I don't need to go online and tell people I did this and I'm the one helping her coming up with these colours and names on her ... lip line. It was a lot of stuff."
Tyga feels Kylie was always destined to become a success, but he also believes he's helped to teach her some all-important lessons.
He said: "She always had a platform and she was always destined to be what she was going to be regardless, but, when I stepped in, there was a lot of codes being taught.
"It was like, you could do this, you should start this, you should start doing your hair like this."
Despite their split in 2017, Tyga has insisted he doesn't harbour any bitterness towards his ex-girlfriend, who is now dating fellow rap star Travis Scott.
He told Nicki Minaj's Apple Music Queen Radio show: "I'm not a bitter person ... if we break up, we break up. We had a good time and kept moving, and we went our separate ways and we're both doing good."
Asked whether he misses Kylie - who has a six-month-old daughter called Stormi with Travis - Tyga said: "Nah, I'm good. I'm good love, enjoy."
Meanwhile, Kylie recently admitted that becoming a mother was "one of the most beautiful moments" of her life.
The 21-year-old reality star said: "Creating life was one of the most beautiful moments of my life. It's hard to explain why. It's just when you've experienced it you understand."