Even after the disastrous makeup incident, Cas still liked spending time with Jo. He enjoyed her company and considered her a close friend. That morning the two of them were upstairs in Jo's room at the Roadhouse. She had requested Cas' help with a hairstyle.

"I know you don't know anything about doing hair, Cas," she said. "But I just need another set of hands."

"May I keep them attached while you use them?"

Jo laughed. "Of course! That's not what I meant. Just… hold this." She piled a lump of her blond tresses atop her head and instructed Cas to keep it there. She pulled a black cylinder from a cabinet and yanked off the top. It looked alarmingly like the cans of spray paint the Winchesters used to pain devil's traps. Surely it wasn't for use in one's hair…

"Jo."

"Yeah, Cas?"

"I do not believe putting spray paint in one's hair would be beneficial."

"It's not spray paint, Cas." She lowered the can and held it forward for his examination. "It's called hairspray. It helps keep your hair in place. See?" She held a lock of his hair up and coated it in hairspray. The sharp, chemical smell stung Castiel's nose. The lock of hair refused to lay flat. It was oddly textured and brittle to the touch.

"Humans use this willingly?" he inquired.

"Yeah, they do. I kind of hate wearing it, though. I only use it for special occasions."

The angel nodded his understanding and went back to helping Jo. He would remember this so called 'hairspray' for the next special occasion he had.

A few days later Cas walked into Bobby's kitchen to find Dean cooking. It was a rare occurrence and signified something important had happened or would in the near future.

"Dean."

"Yeah?"

"What is the occasion?"

The hunter grinned. "It's Bobby's birthday."

A special occasion indeed. Cas nodded once and turned to leave. Then he spotted it. Sitting innocuously on the kitchen counter was a familiar cylinder. It was a can of hairspray. Cas wasn't sure why Dean would have hairspray in the first place (his hair was too short) or why it would be in the kitchen, but it didn't matter. It was a special occasion and rather than borrow Jo's, it turned out that there was hairspray here for him to use. The angel quickly snatched the can off the counter and retreated to his room to get ready.

When Castiel emerged an hour later, he wasn't absolutely sure of his faith in the hairspray. It was a runnier than he remembered and had a penchant for making his hair shiny and greasy. Perhaps it was merely a different brand. Not only was the spray itself different from the one Jo had used, but the name was also dissimilar. The name on her can had sounded French. His can simply said 'Pam'. It was a woman's name and the cylinder was roughly the same size and shape as the can he had seen previously. Castiel was unsure but relatively confident he hadn't made a horrible blunder.

As Castiel took his seat next to Dean, the hunter's eyes were glued to his hair.

"Hey Cas," he said uncertainly. Dean paused for a moment and sniffed the angel's hair. "Dude, you smell like vegetable oil."

Castiel paused. "It is hairspray, is it not?"

"Uh, you used hairspray? You sure? Cause that really looks and smells like Pam."

"Yes."

Dean was confused. "Yes what?"

"That was the brand name: Pam."

Across the table Sam grinned and Bobby rolled his eyes skyward. Dean struggled not to laugh at Cas' mistake.

"What is it?" Cas' expression of confusion was adorable.

"Uh, Pam is cooking oil," Sam said. "Not hairspray."

Dean gave the crestfallen angel a peck on the cheek. "Come on, greased lightning. Let's go get you cleaned up."

Cas swore off hairspray after that.