Repeat purchase / brand loyalty
A large share of reviewers say this is their 2nd, 3rd, or even 5th+ bottle, with some claiming 4-10+ years of continuous use and stockpiling during sales.
Upgrading to larger size for value
Many customers previously used 15ml, 30ml, 80ml or 100ml versions and purchased the 200ml size once available for better cost-per-use and less frequent reordering.
Word of mouth / hype and recommendations
Buyers frequently mention hearing about the product's popularity ('number 1 hair serum in Korea'), being recommended by friends, family, or even an AI assistant, or trying it after a free sample.
Gift purchase
Several reviewers bought the serum as a birthday or general gift for their mother, indicating gifting demand alongside personal use.
Switching from other brands
Customers mention switching from Moroccanoil, Kerastase, or Biosilk products, often citing better price-to-performance ratio.