Ingredient reputation & biotin appeal
Buyers specifically sought Type 1 Collagen with Biotin as a trusted formulation, drawn to its science-backed ingredients and brand recognition of the AYL/Olive Young ecosystem.
Influencer & word-of-mouth recommendation
Multiple reviews cite friends, Korean acquaintances, or social discovery (beauty forums, TikTok presence) as the primary conversion trigger, particularly among international buyers discovering the brand online.
Repurchase & loyalty
Numerous reviewers report 3–6+ repeat purchases, indicating strong habitual consumption and satisfaction; many explicitly state 'repurchase' or 'keep buying' as their usage pattern.
Premium gift packaging
The luxurious tin case and attractive pink ampoules are frequently mentioned as compelling reasons to purchase for gifting, often described as 'thoughtful,' 'pretty,' and suitable for skincare-conscious recipients.
Taste & drinkability
The non-fishy, pleasant orange-juice-like taste is cited as the key enabler for daily compliance, with buyers noting it 'tastes good' as a reason to maintain consistent consumption over 28 days.