rinse
About 10 minutes.
twice a day for 14 days
You should wash you hair with shampoo (as normal), rinse it and then rinse it again with water to which a little vinegar or lemon juice has been added. It will make it shiny. When you do this you should not also use a conditioner.
1- 1 1/2 weeks depending on the style
before or after, it depends on your preference
You should not use laundry detergent in your dishwasher. It produces too many suds and the dishes will not rinse correctly.
Rinse pot & invert to dry out.
Personally,I wouldn't use it after 1 day unless you rinse it ,drain it and put it in a freezer-safe container and place it in the freezer. Then you should keep for no more than 2 weeks.
The best way to use Keratase shampoo is to wet hair, lather, rinse, and repeat. In order to obtain the best results, use with Keratase conditioner.
The person applying the treatment for lice should wear rubber gloves and rinse the patient's hair or body completely after use.
If by salt rinse you mean saline solution, then yes. You can use saline solution on any open wound to clean it.