To get Flex Seal off of skin, you can use soapy water or white vinegar. First, try washing your skin with warm water and soap. Make sure to scrub well and gently remove any remaining residue. If the soap and water don’t work, try soaking a cloth in white vinegar, then gently wipe the affected area. You can also try using an oil-based solvent such as mineral oil or vegetable oil. Apply a small amount to the affected area, wait a few moments, then scrub gently with a cloth. If the Flex Seal is still on the skin, try using a commercial adhesive remover. Follow the product instructions carefully and test a small area of the skin to make sure that it won’t cause any irritation.