Influencer/celebrity recommendation
Multiple reviewers cite specific influencers or makeup artists (e.g., a well-known hair/makeup artist, 'Jo Eun', an esthetician, or a TikTok/Instagram skinfluencer) as the reason they tried the product.
Repurchase/brand loyalty
A very high number of reviews mention being on their 2nd, 3rd, or even 10th bottle, indicating strong repeat-purchase behavior and reliance on it as a staple morning item.
Word of mouth / friend or family recommendation
Several reviewers say a friend or family member (e.g., daughter) recommended it, driving trial purchases.
Reputation as a top-selling/frequently sold-out item
Reviewers note it's a famous, popular product that regularly sells out on Olive Young, prompting purchase out of curiosity or FOMO.
Convenience for busy mornings
Buyers explicitly purchase it to save time in the morning since it requires no foaming step and can be applied to a dry face.