Repurchase / loyalty
A large share of reviewers explicitly state this is their 2nd, 3rd, or 5th+ bottle, indicating strong repeat purchase behavior and brand trust.
Ingredient reputation (Centella)
Many buyers cite trust in Centella asiatica and SKIN1004's reputation for soothing ingredients as the reason for trying or continuing to use the product.
Line completion / cross-sell
Numerous reviewers bought the toner after already using the brand's ampoule, mask, cleanser, or toner pads and wanted to complete the full Centella routine.
Word of mouth / social proof
Several reviews mention buying because of good reviews they'd heard or a friend/family member's recommendation before trying it themselves.
Gifting
Multiple reviewers purchased the toner as a gift for a spouse, sister, niece, or best friend, often reporting the recipient was satisfied.