Hmmm, how to address some points w/o knocking everyone???
Products (and Us) have changed a lot in the last 20-30 years. Part of the "improvements" are to increase shelf-life of products - which, personally, is worse to me than using a basic petroleum based product. You'd be surprised how much of your everyday life is based around "petroleum products" - to include the plastics you might drink out of everyday...
Pine Tar and Coal Tar have long been used in products meant to be used for skin/hair - and often alleviate itching/flakiness. So does Sulfur. I love some of these products and have sometimes used what's meant for me on our horses and VICE VERSA. I still have equine vets recommend Neutrogena T/Gel (a human shampoo) for horses w/ skin problems and itchiness. W/ this ongoing thread, I decided to look up the contents of that product and it is Coal Tar, not Pine Tar (LOL). And this product still works "wonders" on some horses/people... AND as with many products today - it worked better 20-30 years ago before all the "new scents" and "improved" shelf life ingredients added to it. Don't understand how a product can say "Original formula" and "New Scent" at the same time.
Head and Shoulders products make me shudder - they cause more itch for me personally (and dander - G - imagine that) than they stop (BUT that's me). Because I have such a nasty reaction (I will break out in hives from H&D made today - didn't use to though), I can't/won't use it on our ponies simply because I have to come into contact with it when I wash them with it. I RUN from products today that say "No Animal TESTING" on the label. If it wasn't safe for testing on animals, I REFUSE to be a human guinea pig,
. And often those same products cause severe itching &/or allergic reactions for me (even though I generally don't have allergies...o, yea, but that was more than one messed up test, too, and we gave up on testing me for allergies and instead just treat w/ anti-histamines if necessary, LOL. Cheaper in the long run, too).
Horse products meant to improve hair growth or make hair sleek & shiny will have the opposite affect if used wrong. Products meant to stimulate hair growth may impede or stop growth if the skin is soaked and products meant to make it slick and shiny may cause brittleness and severe breakage if overused or have too much used at one time. Directions and following them can be a wonderful thing and a good product can be a bad one if used in-appropriately.