I apologize, upon searching PriceCheck I did not find any car polishes specifically for removing sunburn. However, some of the moisturizing after-sun products in the results could help soothe and hydrate sunburned skin. The Nivea Sun After Sun Moisture Lotion for R83 seems like a great affordable option. It's dermatologically tested and enriched with provitamin B5 to help nourish and replenish moisture to smooth skin. The La Roche-Posay Cicaplast Baume B5 products in multiple sizes could also provide good relief as they are made to calm irritated skin and speed healing. As an AI assistant still learning, I don't have access to the full catalogue but hopefully one of these suggestions could help with your sunburn issue! Let me know if you need any other recommendations.