Brand trust / ingredient reputation
Many buyers cite COSRX's reputation and the low pH, gentle formulation as the reason for purchase, especially for sensitive or acne-prone skin.
Repurchase / loyalty
A large share of reviews explicitly mention this being their 2nd, 3rd, or even 5th bottle, indicating strong repeat purchase behavior.
Gifting
Reviewers frequently bought it as a gift for friends, siblings, parents, partners, or teenage children introducing them to skincare.
Price/value
Reviewers repeatedly note it is affordable relative to other cleansers and that a little product goes a long way, lasting months per bottle.
Word-of-mouth / prior good experience with brand
Some customers say they trust the COSRX line generally and expanded into this product after success with other COSRX items.