A "perfect hairdo" refers to a hairstyle that is flawlessly styled and looks very neat and well-done. It implies that someone's hair is arranged or styled in an ideal manner. Full definition
The actress pairs the most perfect hairdo with her shimmery Prada halter dress at the Cannes The Sea of Trees premiere: clipped - back, wavy strands that give a new meaning to the phrase «hair envy.» (people.com)
If you are nice with her, and compliment her on the always perfect hairdo, then she might feel like giving you a surprise gift for Nature Day! (mypotatogames.com)
There's nothing glamorous about them — no makeup, no perfect hairdos, no uniform body type. (mindbodygreen.com)