How to Properly Clean Your Ancestral Altar for the Full Moon

A detailed guide to the ritual cleansing of your ancestral altar for the Full Moon and the 1st of the lunar month: Unlike the year-end deep clean, the sequence flows from the tablets downward, ensuring the incense burner remains undisturbed.

1. Distinguishing Monthly Cleansing from the Year-End Ritual

Altar cleansing, or Bao Sai, is a sacred practice to purify the worship space and invite auspicious energy. Many families confuse the routine monthly cleansing with the major year-end ritual (held on the 23rd of the 12th lunar month). On the Full Moon and the 1st of the month, the vital principle is: “Purify the space, but keep the incense burner undisturbed.” You must never empty the incense ashes or move the burner for washing. Instead, gently clean the surface dust, refresh the water, and offer fresh fruit to ensure the spiritual energy remains warm and continuous.

2. The 4-Step Ritual for Monthly Altar Cleansing

Step 1 (Requesting Permission): Before cleaning, light one incense stick to respectfully inform your ancestors of your intent to cleanse the altar.
Step 2 (Preparing Sacred Water): Use warm water infused with pomelo peel, cinnamon bark, or ginger wine. Dip a clean cloth into the mixture and wring it out thoroughly.
Step 3 (Top-Down Sequence): Clean the Buddha statues first (if present), followed by ancestral tablets or portraits, then the bronze incense burner, candle holders, and finally the altar surface.
Step 4 (Maintaining the Incense Burner): Gently hold the burner with one hand while using a soft brush to sweep away any fallen ash from the rim.

3. Invoking Warmth with Phu Van Huong Botanical Blends

Once the altar is pristine, complete the ritual by lighting a stick of Natural Herbal Incense Sticks (8 Sacred Herbs). The warm, herbal aroma will sanctify the space and activate fresh vitality for your home.

The Phu Van Huong Craftsmanship Standards:
At our Thuong Dat artisan workshop, Hai Phong, Vietnam, each coreless incense stick is cold-pressed to a precise length of 5.3 inches (13.5cm), offering a steady 45 to 60-minute burn time. Crafted from 100% pure botanicals or Vietnamese agarwood (Aquilaria oud) and bound with wild mountain Litsea glutinosa bark, our sticks contain zero bamboo cores—eliminating the bitter smell of burning wood. They produce a delicate, mist-like smoke, perfectly safe for modern, air-conditioned living spaces.