How to Reproof Your Waxed Jackets and Trousers

Reproofing a waxed jacket means cleaning the outer surface, then applying a fresh layer of wax dressing. Two steps, around an hour hands-on, restores full waterproofing. A regularly worn jacket needs reproofing once or twice a year; a lightly worn one every few years.

Done properly, a waxed jacket lasts decades. Done badly — or worse, machine-washed — and the original cotton can dry out beyond saving. This guide covers the two steps in detail, plus the common questions we get asked.

The 2-step process at a glance

• Step 1: Clean the jacket with cold water and a sponge. Let it dry to the touch.
• Step 2: Warm a tin of wax dressing in hot water, apply evenly with a cloth, then warm the jacket to settle the wax. Hang to cure overnight.

Important: never dry-clean, machine-wash, use hot water or use soap on a waxed jacket. Any of these strip the original wax and damage the cotton.

Step 1: Cleaning accumulated dirt, debris, or residues

Supplies: cold water, a soft sponge or cloth, a flat work surface, a plastic sheet or old tablecloth.

• Bring the jacket to room temperature if it’s been somewhere cold.
• Lay it flat on the protected work surface.
• Wipe the entire outer surface with a damp sponge — work in small circles, top to bottom.
• Focus on collar, cuffs, pockets and hem — where dirt collects.
• Don’t soak it. The aim is to lift surface dirt, not to wash the cotton.
• Let the jacket air-dry to the touch before moving to step 2. About 20-30 minutes in a warm room.

Step 2: Apply a fresh layer of wax dressing

Supplies: a tin of proper wax cotton dressing — we recommend British Millerain Original Wax, a clean cloth or sponge, a bowl of hot water, a warm room.

• Stand the closed tin of wax in a bowl of hot (not boiling) water for 10 minutes. The wax melts to a liquid consistency.
• Open the tin. Dip the cloth in, scoop a small amount of warm wax.
• Apply in even strokes across the jacket — work one panel at a time. Less is more; you can always add more.
• Pay extra attention to seams, pockets and the underside of collars — water gets in there first.
• Once the whole jacket is coated, warm it with a hair dryer on a low setting (or hang in a warm room) to settle the wax into the fibres.
• Hang the jacket overnight to cure. The next morning it’s ready to wear.

Frequently asked questions

How often should I reproof my waxed jacket?

Once or twice a year if you wear it regularly outdoors. Every 2-3 years if it sees only occasional use. Signs it’s time: water no longer beads on the surface, the cotton looks lighter or dryer in places, or the jacket has lost its sheen.

Can I wash a waxed jacket in the washing machine?

No. Machine washing strips the wax and damages the cotton fibres beneath. Sponge cleaning with cold water is the only safe method. If a stain needs more attention, a specialist wax-jacket cleaner can handle it.

What wax should I use to reproof a jacket?

Use a proper wax cotton dressing made for the purpose — like British Millerain Original Wax. Don’t use beeswax, candle wax or DIY mixes; the formula needs to be designed for cotton fibre absorption.

Can I dry a waxed jacket in a tumble dryer?

No. Heat in a tumble dryer melts the wax unevenly and can damage the cotton. Always air-dry.

How long does the reproofing process take?

About an hour of hands-on work — 15 minutes cleaning, 30-45 minutes applying the wax. Then leave the jacket to cure overnight before wearing.