1. Handstring is unique in texture: Hericium erinaceus-phoenix bracelet itself may be sticky, which is caused by its unique material characteristics.

2. Material of nano-brush: The nano-brush itself may have some stickiness, which may be reflected in the bracelet.

3. Impurities on the bracelet surface: After wiping the base with a nano brush, impurities on the bracelet surface may be removed, which may be sticky.

4. Wrapping process: In the process of wrapping and coloring, some chemical reactions may occur on the bracelet, resulting in stickiness.

If this happens, it is recommended to stop using nano-brushes and observe the changes of bracelets. If the situation persists or you are not sure how to deal with it, it is recommended to consult a professional jewelry or bracelet maintainer for more professional guidance.