Reputation for gentleness on sensitive skin
Many buyers explicitly sought a low-irritation Vitamin C after bad experiences with stronger formulas, and purchased this because it was recommended as suitable for sensitive or beginner skin.
Torriden brand trust and loyalty
Numerous reviewers say they buy anything from Torriden without hesitation, citing prior good experiences with the brand's other serums, creams, and masks.
Repurchase after finishing a bottle
A large share of reviews are explicit repurchases (2nd–5th bottle), indicating a habitual, ongoing skincare-routine product rather than a one-off try.
Olive Young sale pricing and bundle value
Many buyers mention buying specifically because of discount events, citing the price as very cheap and the value of the set (with mini bonus size, masks, or lip items) as a bargain.
Influencer / media / dermatologist recommendation
Several reviewers cite YouTubers, Instagram influencers, magazine (LDK) features, or a dermatologist's suggestion as the reason for trying the product.