nostr:nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpqedy4hpcgx2f8s92muvuneavdhnzslgwtn9np6g3fwkwnlg4gj9fsxzshek You mix it with water and then you can easily wash dust off the laptop PCB - don't forget to also rinse with deionised water and finish off with isopropyl alcohol.
After you've cleaned ...