Repurchase/loyalty
A very large share of reviews explicitly mention this being their 2nd-6th+ purchase, showing strong repeat-buy behavior driven by satisfaction with scalp feel and reduced shedding.
Hair loss / thinning hair concern
Many buyers sought the product specifically to address hair fall, thinning hair, or hairline recession, often after trying other anti-hair-loss brands like Ryo or Aveda Invati.
Refill/eco-friendly format and value
Numerous reviewers bought this specifically because the refill pack is cheaper, reduces plastic waste, and offers better value than buying new bottles each time.
Word-of-mouth / family recommendation
Reviewers frequently bought it for spouses, parents, or after a family member's success, and several mention recommending it to friends who also became buyers.
Regional/brand reputation
Several reviewers cite it being a top-ranked Korean scalp-care product or discovered it while visiting Korea, then continued reordering internationally via Olive Young global.