What is ironic about the shave charlie Gordon received from the barbershop?

The irony of Charlie Gordon's shave at the barbershop lies in the fact that, despite his newfound intelligence after the surgery, he still experiences a moment of vulnerability and embarrassment. The barbers, who initially treat him poorly due to his disability, ironically deliver a subpar shave, showcasing their lack of professionalism and respect. This highlights how, even with his enhanced intellect, Charlie remains subjected to the same societal prejudices and mistreatment he faced before. Ultimately, it underscores the superficial nature of societal perceptions of intelligence and worth.