Beginner-friendly retinol formulation
Multiple reviews cite purchasing specifically because it is a low-concentration retinol serum suitable for retinol beginners or those with sensitive skin, representing a safer entry point to retinoids.
Brand loyalty and product line extension
Several reviewers purchased this serum because they already use other Haruharu Wonder products and wanted to expand within the trusted brand's product range.
Gentle alternative to other retinol products
Consumers with past irritation from competing retinol products (including Innisfree PDRN/retinol) specifically chose this serum based on reputation for being less irritating.
Social proof and word-of-mouth recommendations
Reviews mention hearing positive recommendations and seeing reviews from others before purchasing, indicating significant influence of peer and online community recommendations.
Targeting specific skin concerns
Some buyers purchased to address particular issues such as acne scars, dark spots, wrinkles, and texture improvement based on product positioning.