Yes. Apple juice is less acidic than pineapple juice, so adjust the sweet element to taste. You also may use tomato juice in equal parts with the apple or pineapple juices to provide a nice reddish hue to the sauce.
No. Do use a pen or any other writing utensil. If you want to go this route, I suppose you could use a VERY well-cleaned screwdriver, large nail, awl, etc.,...
Sea salt has been used for decades as a remedy for inflammatory skin conditions, particularly psoriasis. Imitating the concentration of the Dead Sea, which has been shown to improve psoriasis...