Word-of-mouth and influencer recommendations
Multiple reviewers mention buying it because a friend, family member living in Korea, YouTuber, or influencer (e.g., Risabae) recommended it.
Repurchase/loyalty
A very high number of reviews explicitly state this is a 2nd, 3rd, or repeated purchase, sometimes buying multiple tubes at once to stock up before they run out.
Gifting
Frequently bought as a gift for spouses, boyfriends, sons, mothers, or friends who dislike sticky sunscreen textures.
Non-sticky/lightweight reputation
Many buyers switched from cream/lotion sunscreens specifically seeking a non-greasy stick format after negative experiences with other brands.
Convenience for reapplication over makeup
Reviewers purchase it specifically as a travel- and bag-friendly reapplication product that doesn't disturb makeup.