Influencer and YouTuber recommendations
Many reviewers explicitly say they bought the product after seeing it recommended by Korean, Japanese, or Chinese YouTubers/KOLs, indicating strong influencer-driven demand.
Word of mouth / viral popularity in Korea
Several Korean and Japanese reviewers mention buying it because it is famous or widely talked about ('유명해서 사봄', 'YouTubeなどで絶賛されてた'), reflecting organic hype.
Repurchase / loyalty
A large number of reviews are from repeat buyers on their 2nd-20th bottle, citing consistent skin stabilization as the reason for repurchasing.
Sale/bundle pricing
Multiple reviewers say they stock up only during sales or 1+1 promotions because the product is otherwise expensive, showing price sensitivity but continued demand when discounted.
Sensitive/acne-prone skin needs
Reviewers with sensitive, reactive, or acne-prone skin specifically sought it out for its reputation as non-irritating and barrier-supportive.