There are several styles of hair perm available on the market. Each of them utilizes a chemical solution known as ammonium thioglycolate. This chemical can be damaging to the hair and scalp. If the individual’s hair does not take well to the perm solution it may be damaged and take longer to grow back normally. The scalp may become irritated to varying degrees as well.
This is the go-to perm style for single-length haircuts when you want both curl and volume. The curl achieved will be either tight or loose depending on the curling rod used.