Influencer and video recommendations
Many buyers cite watching YouTube tutorials (e.g. a 'Hyerim' teacher) or Instagram Reels/TikTok showing the brush-and-puff combo before deciding to purchase, and several note the product is 'a hot topic' or trending online.
Travel convenience
A large share of purchases were motivated by wanting a compact, case-included tool for trips, vacations, or touch-ups on the go.
Repeat purchase / brand loyalty
Numerous reviewers say they are repurchasing after loving a previous puff or brush, sometimes buying multiple color/version sets (Aqua, Glow, Moist, Cover).
Sale/discount pricing
Several buyers mention buying during Olive Young promotions or stocking up while on sale, citing good value at discounted prices though acknowledging it's pricier at full price.
Curiosity after positive word-of-mouth
Some customers bought it purely because of 'a lot of good reviews' or friend recommendations despite initial hesitation about price.