Bundled toothbrush value set
Many buyers cite the included toothbrush and large 105g size as a deciding factor, viewing the set as a bargain versus buying toothpaste alone.
Repurchase / brand loyalty
A large share of reviewers say this is their 2nd, 4th, or even 'countless' repurchase, often after first trying it in Korean Olive Young stores and continuing to buy online once available in their country.
Coffee/tea stain concerns
Frequent buyers mention being daily coffee, tea, or green tea drinkers seeking a toothpaste to manage staining and yellowing between teeth.
Positive reviews / word of mouth
Several buyers explicitly purchased because of high review scores or dentist/friend recommendations seen online.
Sales and discounts
Many purchases were triggered by coupons, BOGO (1+1) promotions, or sale pricing making the large-volume set more attractive.