It means essentially pursuing a glow-up or make-over. Except it’s part of a subculture that teaches that only beautiful people get love and respect. Very man-oriented (probably why they’re too afraid to use normal words like glow up or make over).

Looks maxxer glossary:

• Hunter Eyes; narrow, almost aggresive-looking eyes with a positive canthal tilt (angled upwards instead of downwards or neutral)
• Mogging; make someone look worse by comparison by being better looking than you. E.g “Clavicular was brutally framemogged by an ASU frat leader!”

Famous/infamous looksmaxxing influencers include:

• Clavicular, who has been in the news for shooting a crocodile(?) hitting a stalker with his car, harassing women at nightclubs and recording it all - one time he asked a woman to slap him then got her thrown out of the club after she followed up.
• Clavicular has plastic surgery or bone surgery or something because he used to have very misaligned eyes. I think he is also an advocate of “bone-smashing” - causing fractures in your facial bones so that they will come back more prominent (literally handsome squidward from SpongeBob).
• Androgenic, the guy in the video thumbnail, who wears a hat everywhere on camera because he has extensive hair loss. So his looksmaxxing journey is seeking hair transplants and trying to get as buff as possible.

Wikipedia excerpt for you:

In February 2026, a tweet describing Peters as having been “brutally frame mogged” by an Arizona State University fraternity leader in a video became a copypasta and meme.[10] The term jestermaxxing, used to describe having fun, also spread online that month due to its use in video captions of Peters dancing at the club.[44][3] The suffixes -mogging and -maxxing and the incel term foid, a shortening of the portmanteau femoid, which describes women as subhuman, found popular usage online by February 2026 due to these and other memes of Peters.