Brand trust from d'Alba mist/serum line
Many reviewers say they already loved d'Alba's truffle spray/serum and bought the mask expecting the same quality, showing strong halo effect across the product line.
Reputation and hype/reviews
Multiple reviewers cite high ratings, word-of-mouth, and 'hyped' status as the reason they tried the mask for the first time.
Influencer/celebrity association
At least one reviewer explicitly bought it because of NCT Dream member Jaemin's endorsement, indicating K-pop marketing influence on purchase decisions.
Gifting
Some reviewers purchased the mask as a gift for family members (e.g., 'bought this for my mom'), showing gifting demand for the premium positioning.
Sale/discount timing
A large number of reviews mention buying only during sales (Black Friday, Qoo10/OliveYoung promotions) because the per-sheet price is considered high otherwise.