I asked chat GPT:

​

The question of how Superman shaves with his heat vision, despite the fact that his hair is just as durable as the rest of his body, is a longstanding issue in the comics and has been addressed in a number of different ways over the years.

Here are a few possible explanations:

• One popular theory is that Superman has developed a special technique for controlling the intensity and direction of his heat vision, allowing him to focus it specifically on his hair without damaging his scalp or skin. This would require an incredible level of precision and control, but given Superman's powers, it is not entirely implausible.

• Another explanation is that Superman's hair is not actually as indestructible as the rest of his body. While his skin and bones are nearly invulnerable, it is possible that his hair is not quite as strong, and may be susceptible to damage from heat or other sources. This would allow Superman to use his heat vision to shave without injuring himself.

• In some versions of the Superman mythos, it is suggested that Superman simply doesn't need to shave. His hair does not grow at a normal rate, and may even be entirely static, meaning that it never gets longer or shorter. If this were the case, Superman would never need to worry about shaving or getting a haircut.

Ultimately, the answer to this question may depend on the specific version of Superman that you are looking at, as different writers and artists have taken different approaches to the character's powers and abilities over the years. However, these are some possible explanations for how Superman could shave with his heat vision despite the durability of his