— · Serum
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4.8
72 reviews
Rating breakdown
Most-mentioned keywords
Why consumers buy
Repurchase & Brand Loyalty
Numerous consumers are repeat buyers who purchased this product multiple times after initial success, often mentioning they specifically seek out ISOI brand products for serums and have expanded to additional items in the line.
Pore Concern
Most buyers cite enlarged pores as their primary concern, specifically around the nose and cheeks, and purchased this serum specifically for its pore-tightening promise.
Price & Promotions
Several reviews mention purchasing during sales or special pricing, indicating price sensitivity among the buyer base and suggesting promotional strategies drive conversion.
Gift & Group Purchases
Multiple reviews indicate buyers purchasing multiple units as gifts for family members or friends, with some mentioning foreign friends buying several units to take home as Korean beauty products.
Influencer & Recommendation
Consumers reference cousin recommendations, in-store trials, and brand reputation within the ISOI product family, suggesting word-of-mouth and familial recommendation drives purchases.
How they use it
Morning Pre-Makeup Routine
The most frequently mentioned usage pattern is applying the serum as the first step or base before makeup application, with consumers noting it helps create a smooth base and prevents makeup from settling into pores.
Sentiment breakdown
Share of analyzed reviews by overall sentiment.
Lightweight Summer Use
Multiple consumers describe using it during summer months because it is not heavy, drying, or sticky, making it ideal for warm weather skincare routines.
Line Integration
Several users mention using the serum as part of a coordinated skincare line with other ISOI products (e.g., Rose serum, toner) rather than as a standalone product.
Frequent/Daily Application
Consumers report using it multiple times throughout a usage period (one reviewer used up one bottle in approximately one month) and plan to repurchase larger sizes, indicating high frequency of use.
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