Follow these links to an informative site on grooming horses!
http://www.proequinegrooms.com/index.php/tips/grooming/
http://www.proequinegrooms.com/index.php/tips/grooming/the-20-minute-summer-spruce-up-for-your-horse/
http://www.proequinegrooms.com/index.php/tips/grooming/how-often-should-you-bathe-your-horse/
http://www.proequinegrooms.com/index.php/tips/grooming/roaching-manes/
http://www.proequinegrooms.com/index.php/tips/grooming/post-clipping-tips-and-tricks/
Check the site; they have many more in archives!
Happy Trails!