There are quite a few folks (including us! :) that have used it and continue to use it. It is fantastic for relieving pain & tension, and especially for increasing circulation...and it does assist in the restoration of damaged tissue.
It is very potent & effective, but it does not need to be diluted with any type of carrier oil. Use "more or less" depending upon the intensity you prefer. Start with 1 dropperful and massage it into the area; after waiting 15-20 minutes to realize the full effect of the cayenne, *then* add more if desired.
As far as 'how much' you'll use, here's an example. My husband (now 58) had a motorcycle accident 30 years ago and sustained severe knee damage/surgery. His knee is totally healed, but has "aches when the weather changes" and it tends to become less flexible then. The most he's ever used for that is 2 droppersful. He puts 1-2 droppersful on a cotton ball and rubs it on/in...and that takes care of that. So he's not getting nearly 2 full droppersful (because some stays in the cotton ball).
Some people do use/prefer more (obviously, for a new strain/pull or injury, more would be more healing). There's approximately 80-85 droppersful in a 2oz bottle.
We use Dr. Schulze s original formula to make it (below):
32 oz Wintergreen oil (essential oil)
16 oz EVO Olive Oil
12 oz Organic Menthol Crystals
1 cup Arnica flowers
1 cup St. John’s Wort flowers/herb
1 cup Calendula/Marigold flowers
½ cup Cayenne (we use dried African Bird Peppers & Habaneros)
½ cup Ginger root (grated)
(All ingredients ARE certified organic).
On the new moon, the oils are mixed and the menthol crystals dissolved into the oil mixture. The dry flowers & herbs are then added...and thoroughly mixed/shaken with oil. The jar is put in a food dehydrator at around 100 degrees F for 3 days and then the contents are completely macerated in a VitaMix (warning: if you do this with a polycarb VitaMix container, it will 'cloud' the container permanently - we use our old stainless VitaMix for macerating this). Then it goes back in the food dehydrator (24/7) for the remainder of the moon cycle. The bottle is shaken several times daily. We press what we need from that jar/batch on the full moon - leaving the remaining herbs with the oil to continue imparting their healing goodness.