Hexagonal boron nitride powder and method for producing same, and cosmetic preparation and method for producing same

A method for producing a hexagonal boron nitride powder, the method comprising:

• a calcination step of firing a raw material powder containing a boron-containing compound powder and a nitrogen-containing compound powder at 600° C. to 1300° C. in an atmosphere of an inert gas, ammonia gas, or a mixed gas thereof to obtain a calcined product containing hexagonal boron nitride;
• a firing step of heating and firing a mixed powder containing the calcined product and an aid at 1900° C. to 2100° C. for 10 to 50 hours in an atmosphere of an inert gas, ammonia gas, or a mixed gas thereof;
• and
• a purification step of pulverizing, washing, and drying a fired product obtained in the firing step to obtain a hexagonal boron nitride powder,
• wherein an attenuation rate of a positive charge is higher than an attenuation rate of a negative charge when the attenuation rates of the positive and negative charges determined through charge attenuation measurement are compared with each other.