Influencer/YouTuber recommendation
Several reviewers say they discovered the brush through Korean or Japanese beauty YouTubers/influencers who recommended it specifically for aegyosal and point makeup.
Brand loyalty and collecting
Many buyers mention already owning other Fillimilli brushes and purchasing this one to complete a collection, citing consistent quality across the line.
Low price / good value
Reviewers repeatedly note the brush is inexpensive yet performs comparably to pricier brands, making it an easy add-on purchase.
Repurchase after wear or breakage
A notable share of reviews are repeat purchases, either replacing a worn-out or broken brush or buying a backup/spare.
Specific niche use-case (aegyosal trend)
The rise of the 'aegyosal' (under-eye highlight) makeup trend drove targeted purchases, as buyers sought a brush small enough for that precise area.