>>> This bag has the crease, I hope to get some help�� thanks.
Creases develop as the leather becomes stiffer. The creases become the weak links where the panel flexes, without relaxing the surrounding leather to spread out the flex, eventually the leather cracks.
The solution, therefore, is to relax the stiff leather and replenish the original fatliquor (fat and oil). When leather is processed in the tannery, it has about 15% of fat and oil moisture content, since fat and oil are VOC (volatile organic compound) it will slowly evaporate, which leads to leather stiffness and develops as creases when flexed.
The fat contents separate the stick together fiber and the oil contents lubricate each of the millions within the fiber structure so the fiber slides easily without causing any friction or stiffness that develops as creases.
Two steps help to reduce the creases, first by Hydrator-3.3 to help hydrate the entire bag concentrating at the crease area and replenishes with Fatliquor-5.0.
A holistic approach will need a leather care kit
https://www.leatherdoctor.com/leather-aniline-care-kit-a3/
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Let me know of your further questions.
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Roger Koh
Leather, Skin, Hair, Eye & Acne Care System Formulator
Consultant / Practitioner / Instructor / Coach
web: www.leatherdoctor.com
forum: www.leathercleaningrestorationforum.com
email:
[email protected]