Microtrend
A fast-cycling niche aesthetic measured in weeks rather than seasons — the -core suffix economy that TikTok and Instagram accelerate.
How INFLU measures it
Detected as clustered velocity spikes in tagged content; most microtrends show classic rise-peak-decay arcs in the index.
Live example — Apparel
#1 @arcteryxnewyork
Arc’teryx New York
score 71.9 · Growing
Current Apparel rankings → Apparel leaderboard
Related terms
Decay
How quickly a post’s engagement falls off after publishing — the half-life that separates evergreen content from a one-day spike.
Velocity
The rate of change in a creator’s engagement or following over a rolling window — how fast they are moving, independent of how big they are.
Office siren
The fitted corporate aesthetic — pencil skirts, slim tailoring, narrow glasses — that reframed 90s office wear as a style statement.