Ingredient reputation (glutathione + niacinamide)
Many reviewers explicitly say they bought the product because it combines glutathione and niacinamide, ingredients associated with brightening and skin tone improvement, often calling the combination rare or exciting to find in a body lotion.
Affordable price / good value
Numerous reviews mention buying it because it was cheap or on sale (including Black Friday and Olive Young promotions), especially surprising given the 'premium' ingredient list at a low price point.
Word-of-mouth, family, and influencer recommendation
Several buyers cite recommendations from siblings, mothers, friends, or a K-pop group (fromis9) as the reason for trying it, and some bought extra bottles as gifts for family members.
Repurchase after positive first experience
A large share of reviews are repeat purchases (second, third, or 'countless' bottles), indicating strong loyalty once consumers experience the texture and moisturizing effect.
Free sample or reward introduction
A few reviewers note they received the product as a free reward or sample and decided to purchase full-size bottles afterward, suggesting sampling converts well to sales.