Caring for salmon leather
Bark-tanned salmon leather is built to age for decades. Caring for it is mostly a matter of leaving it alone, well.
Less is more
A vegetable-tanned skin finished with birch tar arrives already protected. It does not need conditioning out of the box, and it does not want a cabinet full of products. What it wants is use, and an occasional, unhurried bit of attention.
Expect it to change. Bark-tanned leather darkens and deepens with handling and light — the patina is the material keeping a diary. A skin that looks slightly different after a year in your pocket is doing exactly what it should.
The whole regimen
Hands are the best conditioner the material knows. Avoid prolonged soaking and direct radiator heat; everything else is living.
Blot with a cloth and let it dry flat at room temperature, away from heaters and sun. Never force-dry leather — heat is the only everyday thing that genuinely hurts it.
A fingertip of neutral leather balm or pure beeswax-based conditioner, worked in with a soft cloth, then buffed. Test on a hidden corner first; a little darkens less than you fear, a lot darkens more than you want.
Store in the cloth bag it came in, never in sealed plastic. Leather survives centuries when it can breathe — the Metta Catharina hides made it through two hundred years underwater, but yours shouldn't have to.
Common worries
Water spots?
Let the piece dry fully, then rub gently with a soft dry cloth. The birch tar finish makes true water staining rare; most marks even out with use.
A scratch?
Rub it with a clean fingertip. Warmth and the leather's own oils relax most surface scratches. Deeper marks become part of the patina — on a numbered one-of-a-kind skin, that is biography, not damage.
Can I use regular shoe polish?
No — pigmented polishes and silicone sprays sit on top of the grain and dull the scale pattern. Use only neutral, wax- or oil-based leather balms, sparingly.
The scent is fading. Normal?
Yes. The birch tar scent softens over months but never quite leaves. Warming the leather in your hands will wake it.
How that resilience is built in, from the vat up.
Read the process