Good value and large volume
Consumers consistently cite the large quantity relative to low price point as a key purchasing driver, with multiple mentions of 'コスパ' (value for money) and appreciation for the size reducing per-use cost.
Repurchase habit and brand loyalty
Several reviews indicate second and third purchases ('二本目', 'リピート'), suggesting strong product satisfaction and habit formation among existing users.
Alternative to premium brands
Some buyers specifically mention switching from MAC brush cleanser or other high-end options, seeking comparable effectiveness at lower cost without guilt over product usage.
Brush care routine integration
Consumers purchased to properly maintain makeup brushes as part of regular beauty routines, with some mentioning weekly cleaning schedules ('週1で必ず洗う').
Bundled purchases with Fillimilli brushes
Several customers bought the cleanser alongside Fillimilli brush products, indicating cross-product appeal and brand ecosystem purchasing behavior.