I use them regularly....I have a quick shower at least twice a day in the hot weather to remove sunscrean - before lunch...before dinner....and I don't need to wash my hair two or three times a day!

j - this may sound counter intuitive - but your hair probably smells bad precisely BECAUSE you wash it every day. Americans are the only people in the world who do wash their hair every day. French women are beautifully groomed and wash their hair once or twice a week - same with most Asians. Up until the mid fifties Americans did the same thing - then Breck and Prell shampoos ran advertising campaigns that convinced millions of women hair needed to be washed every day -- to sell more shampoo. Years and years of daily washing has ruined most American women's hair.

What happens is you stip the hair of all it natural oils and it becomes dry and the static electricity attracts more dirt and grime. Ask you grandmother how often she washed her hair - and it was probably beautiful. And now we spend billions a year on conditioners to replace all the natural oils we wash away.

(And - yes - I almost always use hotel shower caps)

To "Wife Of" -- and I seriously question that, but it doesn't make any difference -- what you're saying MIGHT be true for people with DRY hair, but for people with VERY oily hair your equation does NOT apply at all! And as for people's hair smelling WORSE for washing -- totally FALSE and UNTRUE!!

I wash my hair every other day; I use the shower cap away and at home in the tub or the shower because it also keeps the steam from flattening my do.

I ALWAYS use a shower cap at home and am glad to have them in my hotel rooms. I have long hair and after I shampoo, I put on the conditioner and then the shower cap for a few minutes. (This way the conditioner can coat and soak into all of my hair) then I take off the shower cap and rinse the conditioner out- The result soft, sily hair. When I went to Germany this past Christmas, I brought my own, incase the hotel didn't supply one (which they didn't).

Here's another yes to the shower cap. Traveling on business you are often expected to go out to dinner with colleagues after working all day. At least in my company we go back to the hotel before going out to dinner. Some use the time to check email, phone home etc. I usually feel pretty tacky by the end of the day. So I shower quickly and use the shower cap to I don't have to redo my hair.

I'm a 30 something woman who uses the hotel shower cap. I am 5'3" tall, almost all shower heads are set higher than 5'3" and my hair does get wet when I stand in the shower.
I have no need to get my hair wet every time I shower or bathe.
And yes, when one has hair that is chin length or longer, hair ends can get wet in the bathtub.

Yes, I use a shower cap.

As for washing your hair every day, you wash your face daily (I presume) and your hair goes to the same places your skin does, so why not wash it every day!

Re Jen's comment: I've been living in Europe since 1999 and travel a lot for business and pleasure. I'd say about 98% of the hotels I've stayed in over the past 3 years gave shower caps. Just last week, for example, I had a round of business trips that had me staying in the Netherlands, Switzerland, and Paris. The hotels included one 2*, two 4* and one 3*. All provided shower caps. In fact, the only hotel I've stayed at in the last few years that DIDN'T give a shower cap was a small guesthouse in a village in the Steiermark area of Austria.

I use showercaps! I have very long hair and only wash it every other day...on day 2 it actually looks a lot better (shinier/less frizzy) than day 1. It's pretty dry, never oily. Of course if I go out to a bar, I have to wash it to get out the cigarette stink, whether it's day 1 or day 2.

Sometimes I even take TWO showers a day and I certainly don't wash my hair both times.