If you have just bought an oil-wax or Crazy Horse strap and put the first scratch in it, do this: press your thumb on the mark and rub gently. It will mostly disappear.
That is the entire point of pull-up leather, and it changes how you should look after it.
What "pull-up" means
Pull-up leathers are stuffed with waxes and oils during tanning. When you bend or press the hide, those oils move away from the stress point, and the colour lightens exactly where the leather flexed. Rub the area and the oils flow back, and the mark fades.
So the scuffs are not damage. They are the finish doing what it was designed to do. A pull-up strap that still looks factory-new after a year has not been worn.
Everyday care
Almost nothing. Genuinely.
- Wipe it down with a dry cloth every week or two. Most of what dulls a strap is skin oil and dust, and a cloth removes both.
- Rub out marks with a fingertip. Body heat helps the waxes move. This works on light scuffs and handling marks — not on cuts.
- Give it a rest day. If you wear one watch daily, the strap never fully dries out between wearings. Rotating between two straps roughly doubles the life of both.
When it gets wet
Rain and splashes will not hurt it. A soaking is a different matter.
- Blot, do not rub. Press a dry cloth against the leather to lift the water out.
- Let it dry slowly, at room temperature, away from radiators, hairdryers and direct sun. Fast drying is what makes leather go hard and crack — the heat drives out the oils along with the water.
- Condition once it is fully dry, not before.
Conditioning
Two or three times a year is plenty. More often than that and you will oversaturate the leather, leaving it limp and dark.
Use a neutral leather balm or a light dressing. Put a small amount on a cloth — never directly on the strap — work it in with the grain, leave it twenty minutes, then buff off whatever has not absorbed.
Test on the underside first. Some conditioners darken pull-up leather noticeably, and on a tan strap that is a one-way trip.
Three things that genuinely ruin a strap
- Heat. Drying a wet strap on a radiator will crack it, permanently. This is the most common way a good strap dies.
- Saddle soap and household cleaners. Both strip the waxes that make pull-up leather what it is. Water and a cloth, or a dedicated leather cleaner, and nothing else.
- Wearing it too tight. A strap cinched hard creases permanently at one hole and wears through at that point. It should be snug, not tight — you want a finger underneath.
Knowing when to replace it
Leather straps are consumables. Watch the spring bar holes and the fold at the buckle — when the leather there goes thin, papery or starts to split, replace it. A strap that fails at the lug drops the watch.
When it is time, the vintage oil-wax strap and the Crazy Horse strap both age the way described here. For something made to your own specification, the bespoke builder lets you pick the hide, the stitch and the lining.