Citrusy. Protection. This resin, which develops a delicious scent, a combination of pine and lemon, is extracted from Bursera spp. It promotes an impulse of aspiration towards spirituality and is used as an agent of protection and spiritual purification. Copal Fill the cup 2/3 full with water or sand. Light the candle and place it underneath. Place the mixture of vegetable resins or gums in the cup. Be sure to keep the water level to avoid burning the mixture.