Pore-care ingredient reputation
Buyers frequently cite Centella/peptide/Himalayan salt formulation and the brand's reputation for pore-focused skincare as the reason for purchase.
Repurchase / brand loyalty
A large share of reviewers explicitly mention this being their 2nd, 3rd, or 4th bottle, often after trying other SKIN1004 ampoules (e.g., the brown/original Centella ampoule).
Social proof / hype (TikTok, YouTube, word-of-mouth)
Several reviewers say they bought it because it 'went viral' or was recommended by a friend or influencer video before trying it themselves.
Value for size/price
The large 100ml bottle at a relatively low price is repeatedly called out as 'good CP value' or 'cheap for the amount,' driving purchase decisions.
Gifting
At least one reviewer purchased it as a gift/sample for a coworker or niece who then wanted a full-size bottle.