I might be concerned about it being used at 30%. After checking things out it seems the most used in other products is 10% with the majority being lower. You would need to test it on yourself to see if there are any negatives to it.
I'm sorry I've misled the expression. I added 30 grams of powdered sulfur to the amount of 1000 grams of oils. So the ratio is 3%. My question is, is adding sulfur powder to the soap mixture to be a hot procedure? Or is it possible to add sulfur powder in the cold procedure possible and does not consist of any harmful compound that is healthy?