Influencer/celebrity recommendation
Many reviewers cite specific YouTubers, idols (e.g., Taeyeon), or makeup artists as the reason for purchase, indicating strong influencer-driven demand.
Repurchase/brand loyalty
Numerous reviewers explicitly state this is a second or third repurchase, or that BBIA is a 'no miss' brand, showing strong repeat-purchase behavior.
Color/shade appeal
Buyers frequently purchase multiple shades at once (e.g., 'bought with no. 13, for mix and match') because the nude-brown-pink palette is seen as universally flattering.
Bundled mini/set value
Reviewers mention buying because sets include a bonus mini gloss or lip pencil, seen as good value ('cp值高') and encouraging trial of extra colors.
Gift purchases
Several reviewers bought the product as gifts for friends/family due to its cute packaging and hard-to-find status.