There are a few simple home-brew recipes like white vinegar or borax and lemon juice but these brews have added value in terms of chemistry, concentration and the addition of thickeners to make the cling to the treated item. Nothing to stop you using the traditional stuff while you wait for these to arrive in the post!

Bartoline TX10 Paint and Varnish Stripper 500ml – Extra Strong, Non-Caustic Paint Remover for Wood, Metal & More
4.0

Complete Paint Stripper Wood & Metal Kit – Varnish Remover for Wood, Paint Remover for Metal, Multi Tool & Brush – 4 Piece Set

Paint Stripper 500ml + 13-in-1 Scraper Tool | Heavy Duty Gel Removes Paint from Wood, Metal & Concrete | Multi-Tool Set for DIY & Trade Use | Bartoline TX10...
4.0