What does the term joules refer to?

The term joules is best defined as a unit of energy or fluence. In the context of laser hair removal, joules measure the energy delivered by the laser to the targeted tissue. Fluence specifically refers to the energy per unit area and is typically expressed in joules per square centimeter (J/cm²). This measurement is crucial for determining the efficacy of the laser treatment, as it helps technicians understand how much energy the laser is imparting onto the skin and hair follicles, which influences the treatment results and safety. Understanding joules is essential for practitioners to administer treatments that are both effective and safe for clients.