Is there any concern with using older ('80s-'90s) blow dryers, curling irons, and hot rollers that are asbestos-free and in good condition?

I have several vintage, but lightly used hot tools that are still very functional, and confirmed to be asbestos-free (where applicable, like with the blow dryer). The electrical cords are in good shape as well. It doesn't appear like there should be any safety issues, but is there anything I should be worried about? Most of these are older tools from Windmere and Conair, '80s-'90s vintage.

Another thing I'm concerned with is heat damage to hair. Are these significantly worse for your hair than their modern equivalents? I hate to replace working, functional tools if not. None of these have heat level settings, just high and low on the blow dryer and on and off for everything else. Two of my curling irons have several different attachments (one has different shapes and a crimper/straightener, and the other is just different sized barrels), and neither seems to get as hot as a modern curling iron, but still do the job, while the blow dryer seems hotter than a modern one (and we've actually used it for construction projects for this very reason, lol).

I noticed that curling irons with interchangeable attachments/barrels, the plastic round brush type attachments for curling irons and blow dryers, and the velvet covered curling irons and hot rollers seem to no longer be available on the market - does anyone know if this is due to just a change in fashion trends from voluminous to more sleek, or is there a safety/damage reason for this? Or were they just eventually replaced with something more effective?

Is there any concern with using older ('80s-'90s) blow dryers, curling irons, and hot rollers that are asbestos-free and in good condition?
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