Neem leaf paste can be used to treat various skin disorders. There are several different ways to make such a paste, from several different ingredients...
Really, just about any skin disorder will benefit from the application of neem paste.
Let's look at the details...
This is an easy and quick way to make a neem leaf paste for small skin disorders, like pimples or boils, skin infections, etc.
Of course, all of those could be treated with fresh neem leaves as well. Using paste made from dried neem leaves is just a lot more convenient, since dried leaves are much easier to get a hold off and to keep and store.
When you want to use the dried neem leaf just mix a small amount with water to the desired consistency. Apply to the skin and leave to dry. As noted above, the treatment will be most efficient if you use neem soap and lotion after rinsing off the paste.
Just as convenient as the dried leaf if not more so, you can also use neem leaf extract to make a paste. Just mix it with another powdered ingredient, for example calamine powder or sandalwood powder.
Use the paste just as you would paste from fresh or dried leaves.
A little known way to make a very effective neem paste is to use the soft skin/bark of a young branch of a neem tree. Rub it on a rough surface with a little water until you get a brown paste. That's all.
Obviously this home remedy is only available to you if you live in a region where neem trees grow.