Jul 25, 2009
The Shampoo-Conditioner Inequality
No, it’s not a new The Big Bang Theory episode title (though it’d be a cool one…it’s all yours, Mr Lorre). Rather it’s an odd axiom that popped into my head in the shower (calm yourselves, ladies) having to do with the rate of use of shampoo v. conditioner.
Damn, I am a NERD!
But, back to the Inequality. A while back, I bought a matching set of shampoo and conditioner (citrus-lime). They were by the same manufacturer and came in the same size bottle. Thus, they contained the same volume. But now in present day, I find that I have an empty bottle of shampoo, and an, oh, half-full conditioner bottle.
And I’m betting that would happen in every shower. Regardless of the showerees.
Why? Well, when I wash my hair, I always use, let’s say, x amount of shampoo. Sometimes, 2x, because, I “rinse and repeat” if the hair needs it. If I use conditioner, I’d use the same amount x of conditioner. But I’ve never repeated the conditioner, and sometimes, I just don’t use it at all.
So, I’m using, say, 1.5x of shampoo and 0.75x of conditioner. Thus:
shampoo used >= conditioner used
no matter what, in my shower. Thus, the Shampoo-Conditioner Inequality. Quod erat faciendum.
Huh.
You can’t get more nerdy than this post.
But I’m gonna try, baby.
Yours in math nerd,
Matt







You know what? I always have my best thoughts in the shower. Really, I have absolute epiphanies in there!
But anyway, re the shampoo-condition inequality- for me, the opposite is true. I always shower at the gym and they have conditioner and shampoo in the shower already so it doesnt bother me. But I use 4-5 pumps of shampoo for my hair and 7-10 pumps of conditioner. When I used to actually buy the stuff, my conditioner would always run out first. It’s probably cuz I have more hair and I need a lot of conditioner in order to be able to comb it out after the shower. Otherwise it’s too tangly.
.-= LostFoundAgain´s last blog ..Friday night, Saturday morning =-.
Yeah, you have…oh…20 times the hair I do. More? I can imagine that with such long tresses, conditioner becomes more important. For my short hair, though, I tend to use it only when I feel my hair isn’t doing well.
I will admit, though, that it’s useful when my beard is feeling all scratchy.
One of these days, I’m going to do the “avocado conditioner” I’ve read about. Apparently the oils and fats in avocados are great for hair.
.-= Fortran´s last blog ..Turning in My Man Card =-.