glow up

A "glow up" refers to a positive personal transformation, typically involving a significant improvement in appearance, confidence, or overall lifestyle. The mental image is that of a dim light suddenly becoming bright and radiant, capturing the shift from a state of obscurity or insecurity to one of visible success and self-assurance. While the term is often used to describe physical changes like a new haircut or style, it frequently implies an internal evolution or a "leveling up" in one's maturity and mental health. It is highly informal and most common in social media contexts, often used as a noun or a phrasal verb ("to glow up").
In conversation
Commenting on an old high school photo
I just found this picture from tenth grade. Oh my god, the cringe!
I just found this picture from tenth grade. Oh my god, the cringe!
Whoa, that is a serious glow up. You look like a completely different person now.
Whoa, that is a serious glow up. You look like a completely different person now.
Used here to highlight a contrast between past and present versions of a person.
Discussing a friend's recent lifestyle change
Have you seen Leo lately? He's been hitting the gym and eating so healthy.
Have you seen Leo lately? He's been hitting the gym and eating so healthy.
Yeah, he’s definitely having a major glow up this year.
Yeah, he’s definitely having a major glow up this year.
The term can describe an ongoing process of improvement rather than just a completed result.
Examples
She had a major glow up after leaving her stressful job.
She had a major glow up after leaving her stressful job.
It is amazing to watch him glow up as he gains more confidence in his public speaking.
It is amazing to watch him glow up as he gains more confidence in his public speaking.
The brand’s recent rebranding is a total glow up that resonates with a younger demographic.
The brand’s recent rebranding is a total glow up that resonates with a younger demographic.