Lets see how much of this I can recall as to why Mayonaise.. LOL!
After a clip, much of the coat has been removed including the horses natural oils that are in it. The skin still contains many oils that can be lifted to whats left of the coat, but not as much as the thick coats they had before. Just as with brushing and grooming, bringing those lustering oils up, Mayonaise has many ingrediants in it that replace and enhance what has been removed and not naturally produced, safely without chemicals.
Mayonaise has ingrediants such as egg yokes and whites, which contain high levels of vitamin A+E, as well as antioxidents that in combination with the vitamin C gives that luster. The Lecithen in mayonaise keeps it emulsified which helps when applying it on the coat will help penatrate the pores in the skin and leach into the hair. That's the more scientific reason to mayonaise instead of egg applicaiton. Of course if a person researches far back, eggs have been used not only on show horses in its earliest of times, but prior to soaps being readily available, eggs were used by people as well for hair.
Taking my Sorrel, she has a neat red coat to her that I love when it really shines. After a clip it really dulls down and looses that sparkly luster it had when full. An old mentor I have said he uses Mayonaise on his prior to shows to really bring back the deep color and luster, while also giving the coat a healthy treatment. As much as I love mine, I have always dreaded using the synthetic chemicals for shows that I have. Not much in the way of options around it. So, I took his advice and tried it.. I was very impressed. It also seemed to help with the skin flaking issue myine had from all the playing outside under the summer skies. We have a dry climate out here, so it was a win-win deal when I used the mayo. Not only was I getting great results with the coat, but the skin almost seemed much more softer and pliable then before.
Application: I liek the glove thing.. LOL! I just dip a hand in the jar and start spreading across the coat, then work it in under a message. It gets pretty oily during the rub, which is what I want. I look to make sure I have evey inch coated nicely in that thick oil. I will put a turn-out sheet on for a couple of days, not only to prevent large amounts of dirt from acrueing, but to also keep the oils layered on thinckly. After that, its bath time. From two to three days of wearing it, there has been a huge difference.
Just my .03 worth! Cool thing about it, if a person wants to try it, its only a few dollars spent in a trial, and what ever you have left you can eat if you don't like it, LOL!