Before you go correcting him, consider the possibility that his infrared heater glows orange, and he knows by the theory of blackbody radiation (combined with the lowness of the melting point of all the substances used to make heating elements) that that means it is emitting even more red photons than orange ones.
The "therapy" bulbs with the red or infrared (or both) LEDs are expensive (if they're intense enough to have a therapeutic effect on large areas of skin) and if he happens to have a heater that glows orange or any high-intensity incandescent bulb (either the ones with the red coating sold as heat lamps or the ordinary ones used for lighting) he can use that instead.
Alternatively, he can go out in the sun, which is an intense source of red and infrared photons (of almost all wavelengths -- and tending to come at you in many directions because they reflect off of greenery, dirt and clouds) and if he doesn't want at the same time to be exposed to UV light he can cover up with high-UPF clothing and hat, and the infrared photons will go right through the clothing and hat.
Thanks, exactly my thinking wonderful explanation.
I live in Canada, my eczema was always in the winter and didn’t manifest when I go traveling south.
I tried many things, but the medication is cortisone (can really help if you have a bad flare up) but thing spring back with a vengeance. You are playing the junky with your immune system, what I feel we do with most medication.
For long time I thought it was UV, vit-D, humidity, but I stumble upon this thing about infrared while watching Medcram to learn about Covid (awesome channel by a doctor)
Anyway, the heat dish was a cheap test, locally available.
I figured the spectrum will be continuous in opposition to specialized led, closer to what come from the sun anyway. To my surprise it worked.
Maybe the specialized lights are better/stronger/faster.
The "therapy" bulbs with the red or infrared (or both) LEDs are expensive (if they're intense enough to have a therapeutic effect on large areas of skin) and if he happens to have a heater that glows orange or any high-intensity incandescent bulb (either the ones with the red coating sold as heat lamps or the ordinary ones used for lighting) he can use that instead.
Alternatively, he can go out in the sun, which is an intense source of red and infrared photons (of almost all wavelengths -- and tending to come at you in many directions because they reflect off of greenery, dirt and clouds) and if he doesn't want at the same time to be exposed to UV light he can cover up with high-UPF clothing and hat, and the infrared photons will go right through the clothing and hat.