Frankincense resin is one of the most stable natural materials you can own. Tears found in ancient tombs still carry scent. But “stable” isn’t “indestructible,” and a few common mistakes will dull it. Here’s how to keep it at its best.
How long does it last?
Stored well, resin keeps its aroma for years — many people find it deepens over the first year as the sharper volatile notes soften. There’s no expiry date in the usual sense. What changes over time is intensity: exposed to heat and light, the lighter citrus and pine notes evaporate first, leaving a flatter, more wood-heavy scent.
The three things that damage it
Heat. Above roughly 30°C the tears begin to soften and the aromatic compounds escape. Don’t leave resin in a car, on a windowsill, or beside a radiator or stove.
Light. Direct sun fades both colour and aroma. Keep it in an opaque or shaded container.
Moisture. Humidity makes tears sticky and can encourage clumping or, rarely, mould on any bark fragments. A dry cupboard is better than a bathroom shelf.
The best container
Our pouches are resealable and opaque, and that’s enough for most homes — press the seal closed after each use and keep the pouch in a cupboard. If you buy in larger quantities, decant what you’ll use in a month into the pouch and keep the rest in a glass jar with a tight lid, out of the light. Glass is better than plastic: resin oils can slowly soften some plastics and pick up their smell.
Why it clumps, and what to do
In warm weather tears can stick together into a single mass. This is harmless — the resin is simply softening. Put the pouch in the fridge for twenty minutes and the tears will separate cleanly. Don’t microwave it or leave it in the freezer for long; rapid temperature swings can fracture the tears and drive off aroma.
Signs your resin is past its best
Hold a tear to your nose. Good carterii is clearly aromatic before it’s ever burned. If you smell almost nothing, or the tears have gone dull and opaque, most of the volatile oils are gone. It will still burn, but the scent will be muted and woodier. Use it up on charcoal and start a fresh pouch.
A simple rule
Cool, dark, dry, sealed. Do that and a pouch of Grade I resin will outlast almost anything else in your cupboard. The Resin →