Cool, dark storage works fine if humidity stays low.

Vacuum sealing helps long-term stability, not mandatory though.

Moisture ruins powders faster than simple temperature changes.

Most raws stable if kept dry and airtight.

Vacuum seal mainly prevents clumping and oxidation over months.

Simple airtight jar often enough for short-term storage.

Heat fluctuating rooms degrade potency noticeably over time.

Desiccant packs help more than fancy vacuum setups.

If storing months, vacuum sealing offers extra insurance.

Priority always: airtight, dry, consistent temperature—vacuum optional.