1+1 promotions drive purchase
An overwhelming number of reviews across Olive Young mention buying specifically because of buy-one-get-one-free deals, often citing this as the main reason for trying the product.
Low price / good value
Reviewers frequently note the product is cheap, a 'bargain', or good value for money, making it an easy trial purchase even without prior brand loyalty.
Trend/curiosity around cooling face tools
Several buyers say they wanted to try the ice-roller/cooling-massager trend without paying for pricier alternatives, indicating category-level demand beyond brand loyalty.
Targeted relief for heat, redness, and puffiness
Many reviewers with rosacea, hot flashes, post-procedure redness, or morning puffiness bought it specifically to cool and calm irritated or swollen skin.
Gifting
Multiple reviewers bought extra units (thanks to 1+1 deals) to give to mothers, sisters, or family living overseas.