Ingredient reputation (Centella, niacinamide, azelaic acid)
Many buyers cite trust in SKIN1004's Centella asiatica line and specific actives like niacinamide/azelaic acid as the reason for purchase, especially for pigmentation and blemish concerns.
Social media & influencer hype
Several reviewers mention discovering the product via TikTok or widespread positive reviews online before trying it themselves.
Repurchase/brand loyalty
A large number of reviews are from repeat buyers (2nd, 3rd, or 4th bottle), often citing satisfaction with other SKIN1004 Centella products as the reason for continuing to buy.
Gift or sample-driven trial
Some consumers received the ampoule as a free gift-with-purchase or sample and then purchased the full size after noticing results.
Price/value perception
Reviewers frequently note the product is reasonably priced for the results and packaging size, though a few mention it can be found cheaper on other retail sites.