Affordable repurchase cycle
Consumers consistently cite the low price point (around 6,900–7,000 won) as a driver for regular repurchasing, often buying on sale. The value-for-money perception is reinforced by comparisons to more expensive ampoule treatments perceived as delivering similar results.
Brand trust and product series continuity
Several reviewers mention switching from discontinued Kerasys conditioners or related products in the series, indicating brand loyalty and successful line extension. Prior satisfaction with other Kerasys water treatments and serums motivates purchase of this ampoule.
Damage repair for color-treated hair
Multiple buyers specifically purchased the treatment because they dye their hair frequently and needed intensive repair. The product is positioned as a solution for brittle, dry, damaged hair resulting from chemical treatments.
Quick, easy routine integration
Reviewers praise the time-efficient application ('doesn't require much time for hair care'), making it attractive for busy consumers who want visible results without a complex multi-step routine.