1. Smoke cleansing (sage, palo santo, incense)
The most-taught method. Hold a smouldering smoke source (sage bundle, palo santo stick, or stick incense) and slowly pass the deck through the smoke, fanning the cards if you like. Visualise the previous energy releasing. It takes about a minute. Practical note: a smoke detector will not appreciate this — open a window. If you cannot burn anything indoors, a single drop of essential oil rubbed on the deck box is a quieter substitute.
2. Moonlight overnight
Put the deck on a windowsill that catches the moonlight, ideally on the night of a full moon. Leave it overnight. By morning, the deck is considered fully cleansed. This is the gentlest method and the one most beginners enjoy because there is nothing to set on fire. Some readers do this every full moon as a regular maintenance ritual.
3. Crystal placement
Place a clear quartz, selenite, or amethyst crystal on top of the deck box overnight. The crystal is said to absorb and clear any lingering energy. Selenite is the most popular choice because it does not need cleansing itself. If you do not own a crystal, a smooth pebble you have spent time choosing can do the same job — the meaning comes from intent, not the mineralogy.
4. Shuffling intention
The most practical method for in-between-readings cleansing: shuffle the deck thoroughly while speaking your intention out loud ("clear this deck of the last reading, ready for the next"). Then knock on the deck three times. This takes thirty seconds and is what most professional readers actually do between sessions, regardless of whether they also use ritual methods at home.
5. Sorting the deck back to order
Take the deck out and sort all 78 cards back into their original order — Major Arcana 0 to 21, then Wands Ace to King, Cups Ace to King, Swords Ace to King, Pentacles Ace to King. This is the most "secular" cleansing method and is recommended whenever a deck has been heavily used or has fallen into disuse. The act of sorting is itself the reset.
When to cleanse
Cleanse a new deck before its first reading. Cleanse after a particularly heavy reading (a breakup, a death, a major life pivot). Cleanse if someone else handled your deck. Cleanse if you have not used the deck in months. Otherwise, occasional maintenance — full moon, monthly, or once a season — is plenty.