What is NOT one of the traditional purposes for which CO2 and Er:YAG lasers were used?

The traditional purposes for using CO2 and Er:YAG lasers are primarily centered around their ability to interact with various types of tissues for surgical and dermatological applications. CO2 lasers are well known for their effectiveness in surgical tissue cutting due to their high absorption in water, allowing them to precisely excise tissues, and in tissue resurfacing, where they help to remove layers of skin for cosmetic rejuvenation.

Er:YAG lasers also serve in similar roles, focusing on tissue resurfacing by delivering energy to the upper dermis while minimizing thermal damage to surrounding areas, making them suitable for procedures like fine wrinkle removal and scar treatment.

In contrast, while lasers are indeed utilized for hair removal, the specific lasers typically employed for this purpose are often of different types, such as Nd:YAG or diode lasers, which are optimized for targeting the pigmentation in hair follicles. Therefore, hair removal is not a traditional application associated specifically with CO2 and Er:YAG lasers, distinguishing it from the other listed uses.