Hi
Apple's does not recommended using any cleaning products when cleaning Apple Watch bands.
The recommended steps are:
For leather and woven nylon bands:
- Wipe down the band with a nonabrasive, lint-free cloth.
- If required, the cloth can be lightly dampened with fresh water (leather bands are not water resistant, so should not be soaked).
- Allow the band to air dry, whilst avoiding exposure to direct sunlight, high temperatures or humid conditions, which can cause damage.
For all other bands, buckles and enclosures:
- Wipe down the band with a nonabrasive, lint-free cloth - which again can be dampened with fresh water if required.
- Dry the band with another nonabrasive and lint-free cloth.
More information:
Cleaning and wearing Apple Watch - Apple Support