I recommend that you read Jackie's post about her commitment to chemical-free soap. She has several important personal revelations regarding soap/chemicals and I respect her decision to remain chemical-free even though I sure it increases her costs.
2 Virgos Designs blog - soap maker extraordinaire
PS Her Knights Templar soap smells so nice and it makes my whole master bathroom smell wonderful. It's so pretty I'm careful about using the front painted area so that it remains pretty longer. ;o)