Bundled with BOH cream/eye cream sets
Many reviewers say they received the mask as a free gift or bonus item ('おまけ') when purchasing the brand's moisturizer or eye cream, which drove trial and later standalone purchases.
Brand trust from existing BOH cream users
A large number of buyers already use and love the BIOHEAL BOH moisturizer/eye cream and bought the mask because they trust the brand's formula and results.
Olive Young sales and bundle discounts
Multiple reviews mention buying during promotions or 1+1/8+2 deals, citing excellent value (e.g., '$2.50 for the mask') as a key motivator.
Gifting for mothers/older relatives
A notable share of purchases were bought as gifts for mothers, mothers-in-law, or aunts specifically for anti-aging/moisturizing benefits.
Social media / word-of-mouth hype
Several reviewers cite hearing 'so many good reviews' or seeing it on SNS/TikTok before deciding to try it, sometimes rating 5 stars before even using it.