Yes, sulfur - that same stuff run-of-the-mill match sticks are made of.
Sulfur has been used for ages to treat a wide range of skin problems.
From dandruff to dermatitis, from warts to rosacea, sulfur (historically better known as brimstone) was the treatment of choice for the ancients with an itch to scratch.
The natural element has an odor that could only be described as...
The closest stench that comes to mind is that of rotten eggs.
For this reason, I count myself fortunate that sulfur acne treatment today has evolved by leaps and bounds.
You see, sulfur is a common ingredient in over-the-counter products.
That soap you wash your face with daily most likely contains sulfur.
In all probability, so does your dandruff shampoo.
So yes, you should be thankful you can use those products without immediately associating them with rotting eggs.
When applied to the skin, sulfur makes it dry up and start to peel.
This is not a bad thing.
As a matter of fact, it's actually a good thing, if you have acne.
Sulfur acne treatment reduces the oil produced by your sebaceous glands, thus preventing the blockage of pores.
If you are using a product with sulfur in it, pay close attention to the instructions on the label.
Some products can be left on overnight, or even all day.
Others have to be rinsed off after 10 minutes or so.
As a rule of thumb, anything with brimstone in it is only good for use one to three times a day.
Be sure to double check usage directions, so you won't end up looking like someone had left you under the sun for too long.