Repurchase / holy grail status
Many reviewers explicitly mention this being their 2nd, 3rd, or 4th bottle, calling it a staple or 'holy grail' hydrating serum they keep restocking.
Ingredient reputation (centella, hyaluronic acid, niacinamide)
Buyers frequently cite the centella asiatica, hyaluronic acid, and niacinamide combination as the reason for purchase, associating SKIN1004 with trusted soothing/hydrating K-beauty ingredients.
Comparison shopping against competitor HA serums
Several reviewers say they bought it after comparing to or replacing Torriden Dive-In and Purito Centella serums, often preferring this one for texture or price.
Word-of-mouth / social recommendation
A number of reviews mention buying because 'everyone recommended it' or after seeing dermatologist videos and online buzz about the brand.
Gifting for family/friends
Some buyers purchased it as a gift for mothers, daughters, boyfriends, or kids with dry or sensitive skin, citing gentle formulation as a selling point.