How do you remove dry varnish from carpet?

To remove dry varnish from carpet, first, gently scrape off any excess varnish using a plastic scraper or a credit card, being careful not to damage the carpet fibers. Next, apply a small amount of paint thinner or rubbing alcohol to a clean cloth and dab it onto the varnish stain, letting it sit for a few minutes. Blot the area with a clean cloth to lift the varnish, and repeat as necessary. Finally, rinse the area with water and blot dry to remove any residue.