Its easy to make an all-natural butt-balm for those long rides.
Start with Shea butter, available at some health-food stores but I get it at the anual African festival here in asheville.
Step 1: Liquids
Add a little aloe vera gel. This is best obtained from the actual plant but can be found at the drug store, just make sure it doesn't have any additives. it should be "pure" aloe.
Next comes olive oil, not too much since is will be too oily and ruin your shorts.
Step 2: Options
Play with the formula a bit to get the right consistency. More liquid for fabric shammies, more waxy for natural leather shorts.
If you can't find shea butter you can use cocao butter as long as its 100%. Cocao butter is more solid so it might need to be warmed up first.
Bee's wax can also be used as a base, but not without some shea or cocao butter. The wax should be melted over very low heat.
Let me know if you have some suggestions.
Good luck and ride safe!