Avoid driving if possible
Keep the windscreen out of direct sunlight and sudden temperature changes
Do not use defrost or high heat on the cracked area
Do not wash the car with hot water
Do not slam doors or hit bumps hard
Clean the crack gently with a dry microfiber cloth
Apply clear tape over the crack to keep dirt and moisture out
Use a windshield crack repair kit as soon as possible
Seal the crack with resin if the damage is small
Park in a shaded or covered area
Get the windscreen repaired or replaced by a professional quickly