Can the Sauna Damage Hair?

Hello,
I would like to know what you think about the sauna. Average 80°Celsius (170° Fahrenheit). Some say it can damage hair follicles. Some say this is good for blood circulation system, helping the flow of blood to the scalp. Who to trust?

Thank you in advance. All the best.

Hair is above the scalp and it is dead when it appears from the skin. “Damage” is a relative term, because while you could dry out your hair and lose the luster that the oils bring to it, a sauna will not impact the hair that has not grown out through the skin yet.