Keep leftover paint out of drains and ordinary mixed recycling. If it is still usable, look for a suitable reuse scheme; otherwise identify the paint and ask your local service how to dispose of it.
Identify what is in the tin
Read the original label. “Gloss”, “satin” and “matt” describe finishes and do not reliably tell you whether the product is water- or solvent-based. Keep the lid secured and retain the label so the receiving service can identify it.
Do not mix different paints, solvents or cleaning liquids to reduce the number of tins. That can make identification and disposal harder.
Can someone reuse it?
Community RePaint is a starting point for local paint reuse. Check the nearest scheme’s accepted products, condition and drop-off arrangements. Do not assume it accepts every paint or provides free paint to every recipient.
If arranging a private donation, describe the product honestly and keep it in its original container. Unidentified or spoiled material should not be passed on as usable paint.
When it needs disposal
Recycle Now distinguishes solvent-based products and points to hazardous-waste services. Ask your council or recycling centre about the specific product, quantity and condition before travelling.
Some services require particular water-based paint to be hardened, while others have separate collection arrangements. Follow an explicit instruction for that product; do not apply a drying method to an unknown chemical or solvent-based paint. Never burn it or pour it onto soil.
Empty tins are a separate question
A tin that looks empty can still contain residue. Ask whether the service accepts it with paint waste, metal packaging or another stream. The container material alone does not establish the right bin.
Can paint go in general waste once dry?
Only where the council’s instructions permit that particular material. Dryness alone does not identify the product or remove every hazard.
For other household sorting questions, see recycling rules.