Gateway trial for the ampoule/serum
Many buyers explicitly bought the single sheet mask to test the Bifida Biome ampoule/serum before committing to the full-size bottle, citing curiosity about the popular line.
Brand loyalty and repeat purchase
Existing fans of ma:nyo's Bifida ampoule or toner bought the mask because they already trust the line and wanted to try it in a different format.
Sale/promotion and order-value top-up
Several reviewers added the single sheet to reach free-shipping thresholds or bought during Olive Young sales because it was cheap for the perceived quality.
Reputation for sensitive/irritated skin
Buyers with eczema, rosacea, or sensitive/acne-prone skin purchased it specifically hoping to calm irritation and repair the skin barrier, based on brand and product reputation.
Single-sheet trial format availability
Reviewers valued being able to buy just one sheet (rather than a box) to sample the ampoule experience at low cost and risk.