Is the LilyTwinkle washable? I want to use it in COVID 19 facemasks with LED lights.
Yes!
You can hand wash the LilyTwinkle with soap and water.
Just make sure to remove any batteries before washing and don’t reinstall them until everything is completely dry. 
Thanks!
Also, just be careful not to scrub or scuff the pads on the module or use overly acidic cleaners (of which mild detergent shouldn’t be)