As you need to use less than your more traditional finishing waxes, it will last longer than you think. It is best used within 12 months of purchase to ensure the best results possible. Martin’s own tins are perfectly good 18 months after opening. To keep the product in tip-top condition for as long as possible, remember to firmly replace the lid when you’re done. Also, keep it in a cool, dry place out of direct sunlight and heat sources.