Why the world is going ga-ga over this serum ( hint … it doesn’t break the bank :))

Name: Hada Labo Gokujyun Premium Hyaluronic Acid Solution (Phew haha) Price: Varies, depending on the seller, but its near the £12 mark on Amazon. Range: Ok the Hada Labo range has so many derivatives for each item ie (the serum comes in so many varieties from its white range, to the mentholatum range, the retinol