Influencer recommendation & tutorials
Multiple reviewers mention watching tutorial videos (specifically referencing 'Herim teacher') that motivated purchase and usage learning, indicating strong social media and YouTube influence in the buying decision.
Repurchase and brand loyalty
Several reviews explicitly state intent to purchase more Tool Lab brushes in the future, and at least one reviewer bought a second set, suggesting high satisfaction and repeat purchase behavior.
Discounted pricing & promotions
Multiple customers mentioned purchasing during sales, coupons, or price drops (described as 'lucky' or 'discounted'), indicating price sensitivity and promotional effectiveness.
Complete eye makeup solution
Reviewers appreciated the three-brush set as a comprehensive toolkit that could handle all eye makeup steps (upper lid, lower lid, tear trough) without needing additional purchases.
Quality reputation over budget alternatives
Comparisons to cheap brushes (hundreds of yen alternatives) motivated purchase, with consumers viewing it as a worthwhile investment in tool quality rather than cosmetics.