I shampooed my hair just for you

This has been adapted to being the wild side of a girl. In the last 20 twenty years we've seen this re-incarnated in different way.

Some 80s and 90s examples might be:

One might be the girl walking down the street and the cats calls come from the boys and she smirks and walks on, of course the onlooking girls are jealous and ask how does she do it, and she whispers "It's all in the hair," which is followed by shots of her lathering in the shower (Early nineties).

Another of a girl with a girl walking down the street with gross hair, the repulse created by it. Then she finds hair brand X. The next day she walks by the catcalls and a guy comes in immediately to escort her. She walks on and the camera close in on her purse where she pulls the bottle half way out and then you draw back to see the girl wink at the camera.

Or the group of girls in their late 20s to mid 30s talking in a restaurant and the waiter is flustered by her striking appearance (with accentuated hair). They giggle amongst themselves, they ask her how she does it and they show her lathering in the shower (lathering in shower became popular for some reason, probably a focus group and increased conotation popularity.)

To the time period it's the business professional who wants to be more of a "woman" by being someone's woman.

It's a tasteful decline of society in which we aspire to being admired in meat bodies. Quaint, ain't it? Not necissarily a horrible thing, as it impinges on that dynamic of everyone to create a family and live through the having and rearing of children etc. Not a bad impulse and it plays on that pretty well.