Brand loyalty / line repurchase
Many buyers already own the red or other TIRTIR cushions and purchased this variant specifically to compare finish and coverage within the line, often repeating purchases multiple times.
Sale/price promotions
Numerous reviewers cite Olive Young sales, bundled mini sizes, or lower prices versus retail (e.g., Japan) as the deciding factor for trying or repurchasing the product.
Word of mouth and social recommendation
Reviewers mention buying because a friend, sibling, or online reviews/influencers recommended it, and some reference celebrity association (e.g., 'Taehyung') driving curiosity.
Gifting
A notable share of reviews describe purchasing the cushion as a gift for mothers or sisters, valuing its natural, made-up-but-not-made-up look for older or gift recipients.
Curiosity about coverage/skin type fit
Buyers with specific concerns (oily skin, large pores, dullness, post-acne marks) purchased after reading it suits oily/combination skin or offers high coverage without heaviness.