Originally Posted by BackInTheSaddleAgain
I just use mane and tail shampoo. Baby shampoo on the face, though. I use baby shampoo for my boxers, too, since they have extra sensitive skin.
As a dog and cat groomer, I can tell you that using a human product on a dog who already has sensitive skin, is not the best for him; human products strip out ALL the oils from an animal's coat, including the oils they need. Also, just because baby shampoo is 'tearless' does not mean it is good for sensitive skin at all...quite the contrary, the chemicals put in there to actually make it tearless, can cause skin irritation and allergies. I know boxers are one of the breeds that I see most often with scaley itchy skin, and we use a hypoallergenic shampoo...the one we currently use is by Earthbath, and I see pretty good results with it. Another option would be a puppy shampoo, as these are generally very gentle, as well as tearless. Again, the one I am currently using is by Earthbath...you can find it at most petsmart, or petcos, and there are also lots of other brands you could try that would be a whole lot better for your pet.
As for the OP, You could use your human shampoo on your horse yes, just be careful about getting it in her eyes. I use Mane and Tail on my horse pretty regularly, and haven't bought a bottle in over a year, so really, you aren't spending 'that much' for a product that is made for them. It dilutes alot more than human products will, which is why I prefer it, especially in the winter when I give warm sponge baths, instead of full on baths!
A trick I use to help loosen eye gook is taking a warm (not hot!) green tea bag and gently rubbing that on and around the eye; keeping more tea bags, or just some water near by, can help, as you'll likely need to resoak the bag. You could also just brew some green tea, cool it off, and use a wash cloth being dipped in the tea to help break up the gunk and soothe her eyes.