Down the side of the audiogram, there is a measure of loudness. At the top of the graph are the very. quiet sounds, going down to moderate, and then very loud sounds. The points (red circles and blue. crosses) marked on the graph represent the quietest sound which can be just heard.
Steps. 1  1. Wait at least 3 days to wash newly permed hair, or your perm would not last as long. 2  2. Use hair care products that are safe for permed hair 3  . 3. Wash your hair gently (don't scrub too hard or your hair will tangle up)(your hair is very porous and fragile). 4  4. Gently rinse your hair.
Let's get started. The first rule of after care when getting a perm is not to wash your hair for at least 24 hours. This is very important because your hair is very fragile and it also needs time to adjust to the chemicals. You can wet it but do not wash it for 24 hours. When the 24-hour wait time is up and you are ready to wash your hair use a shampoo for chemically treated hair.