Unexpectedly stuck overnight in a cheap hotel without luggage or toiletries, this dive provided bar soap but not shampoo. I can personally attest the hand soap is extremely harsh on the hair relative to shampoo. Comet cleanser: hand soap as handsoap: shampoo
There’s a chemical difference between soaps and detergents. I can’t tell you the exact difference anymore, but they are entirely different classes of chemical compounds. Detergents, such as shampoos and body washes, react differently not only with oils but with water (I believe they’re more soluble). Soap tends not to rinse off as well and leave residues. That’s why they call it soap scum, not detergent scum, and also why we use detergents to wash our dishes. Nobody wants soap residue in their food.
I’m not even going to try it, because I’ve had bad enough luck using bar soap to wash my face - despite rinsing thoroughly, the resulting soapscum sticks to my stubble, and takes forever to shift. Rubbing it with a towel just causes it to form little tiny clumps… yuck!
For anything hairy, I’d definitely say a liquid or gel-type product is the way to go.
i use what ever shower gel i’m using as shampoo, followed by pantene conditioner. no hair problems here. i don’t use any other hair product other than conditioner, no hair dryer either. never use glycerin as a shampoo.
I once had to scrub the top of my head with bar soap. My hairdresser had stuck a giant blob of goopy wax (it was actually kinda runny, and white like mayonaise) in my hair that refused to yield to the power of shampoo.
The bar soap wasn’t too bad, though. My hair seemed fine. Although, it was a moisturising soap, so I’m not sure if that made the difference.
**I also can’t remember the difference. :o I remember a chemistry teacher telling us that if you were out of shampoo, it was better to use liquid dishwashing detergent than soap.
Oh, could someone explain the difference between “dish soap” and bar soap to me?
I make soap (as mentioned in another thread) - and there are some bar soaps that are specifically designed to be used as a shampoo - they are actually called shampoo bars. I don’t think they are made by big corporations, but some smaller soapmakers make & sell them. They have a higher amount of castor oil than most homemade soap recipes - and they take a longer time to be ready to use. I’ve had people say that a great shampoo bar might be ready for best use a year after making!
Bar soap is much too harsh, especially if your hair tends toward dryness, as mine does. I would imagine the brand of soap might make some difference: Ivory leaves a horrible film! If I was interested in an all-in-one product, I’d probably use a baby-formulated product like Johnson’s Head to Toe.
the chemical difference is that soaps, which are usually sodium salts of some kind, get the sodium “exchanged” for other metal ions in hard water, such as magnesium or calcium. The sodium salts are water soluble, so they go down the drain and you never see them, but the other metal salts aren’t, so they precipitate out of solution and build up as soap scum. Detergents are soluble regardless of the metal ion they are complexed with, I think, but anyhow they don’t precipitate out and make soap scum.