What are the best wood finishes for outdoor chairs in sandy beach environments?

When selecting wood finishes for outdoor chairs in sandy beach environments, durability and weather resistance are key. The best options include marine-grade varnish, teak oil, and epoxy sealants, which protect against salt, UV rays, and moisture. Marine-grade varnish offers a hard, glossy finish ideal for harsh conditions, while teak oil enhances natural wood beauty and requires regular maintenance. Epoxy sealants provide a waterproof barrier but may need a topcoat for UV protection. Avoid standard finishes, as they degrade quickly in sandy, salty air. For longevity, choose finishes specifically designed for marine or outdoor use.