Long-standing reputation / classic status
Many reviewers describe using this mask 'for years' or calling it a 'name-brand item' and 'holy grail,' indicating strong legacy brand trust that drives repeat purchase.
Repurchase loyalty
A very high number of reviews explicitly state this is their 2nd, 3rd, or many-times repurchase, showing strong retention once tried.
Ingredient reputation (NMF/hyaluronic acid/amino acids)
Several reviewers cite the amino acid, hyaluronic acid, and mineral content as the reason for purchase, associating the NMF formula with reliable hydration.
Celebrity/influencer recommendation
At least two reviewers mention buying because they saw a K-pop idol (SJ Eunhyuk) or 'famous celebrities' using the product.
Value during sales/bundle pricing
Multiple reviewers mention buying '10 packs' or repurchasing specifically when on sale, citing good value for the quantity of essence included.