For deep wave wigs, conditioning is an essential part of maintaining their softness, manageability, and overall health. According to the information gathered, here's the recommended frequency for conditioning your deep wave wigs: 

1. Conditioning Frequency: It is advised to condition your deep wave wigs every time you wash it, which is approximately every 6-8 wears . This helps to retain moisture and manageability in the hair.

2. Deep Conditioning: In addition to regular conditioning after each wash, it is also recommended to perform a deep conditioning treatment every other wash to ensure lasting moisture and shine .

3. Conditioning Process: After washing, apply a generous amount of conditioner specifically made for wigs, focusing on the mid-lengths and ends of the hair. Leave the conditioner on for a few minutes to allow it to deeply moisturize the hair before rinsing with cold water to seal the cuticles and reduce frizz .

By following these guidelines, you can keep your deep wave wigs in optimal condition, ensuring it remains soft, shiny, and easy to manage.