We use it like this in Korea!! October 18 2025, by numberskin CKD Retino Collagen 300 Guasha Neck Cream: Your Secret to a Youthful Neck! My Honest Review & Why You Need It Now! Retino Collagen Low Molecular 300 Guasha Neck Wrinkle Cream 50ml 1+1 Set (CKD) Korean consumers rated it like this!! Living in Korea, where... Read more