He pointed to his personal hairdresser, who he described as "more than a barber", for helping him stay cheerful as he urged others to do the same.
Eamonn captioned the post: "Haircut to cheer me up. Home visit from @leobancroft."
The TV star was inundated with messages from his celebrity pals and fans alike.
Saira Khan wrote: "Self-care my friend. Good for you. Still looking mighty fine."
Ellie Costello added: "Lots of love Eamonn."
