What are the ingredients? Why are they not listed???

I think you're question was on the Fragrance free version-> Ingredients: Sodium Cocoate,Water, Glycerin, Sodium Chloride, Sodium Gluconate. Great soap. Don't know why they're not listed on Amazon. There's nothing to hide. You can also view at https://www.kirksnatural.com/products/kirks-fragrance-free-coco-castile-bar-soap/

Please make it clear how many bars of soap. Does "Pack of 6 (3 per pack)" mean 6 bars, or 6 packs of 3 (i.e. 18) bars?

If I remember right it is 6 bars.

Has anyone tried this in making their own laundry detergent? If so, does it work well with cold water washes and is it safe for the septic?

I bought it to make my own laundry detergent also! I did that and haven't had any troubles - we use cold or cool water to wash. I can't certify it is safe for the septic, but I assume so - coconut oil is natural.....

What are the ingredients? is it (coconut soap, water, veg-glycerin,coconut oil) or (sodium cocoate,water, glycerin, sodium chloride, sodium gluconate)

My bars list sodium cocoate, water, glycerin, sodium chloride, sodium gluconate. In the time I have been buying this soap, I saw that the ingredient names had changed, so I called and talked with Customer Service. I was told that both the old and new listed ingredients are actually the same thing. A Consultant Kirk's brought in to advise them updated the ingredient names. Before purchasing, I would suggest contacting Customer Service and asking them directly just to confirm what my understanding is. Contact information is: (859) 647-0777 Monday to Friday 8:30 am- 4:00 pm ET, OR Email at info@kirksnatural.com. I have been buying this soap for years, and I love it. So gently for sensitive skin. Unless this is ever discontinued, I will never buy any other soap!