esc laboratoire propolis external care purification and immunityPropolis is a natural shield produced by bees to protect and purify the hive Internal use: recommended to strengthen the immune system at the start of the cold season, during high risk periods, or to cleanse the throat and oral cavity External use: recommended to purify the horse's skin and support the natural healing process Dosage to add to the base ration for an adult horse (550kg): 50 to 100 drops per day for 3 weeks External use: apply directly