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.
Â· just now. Report Abuse. You have to wait 24 hours after you get a perm to get it wet....and the curls will unloosen after the first time you wash it. Source(s): Legally blonde, and after about 5 perms, I know the routine. â¥Starry Eyedâ¥ Â· 8 years ago. Thumbs up.