Japanese hair straightening is a permanent hair straightening solution that chemically changes the structure of hair. The key ingredient in the straightening solution is a chemical formula that contains cystine and ammonium thioglycolate. Here are some positive and negative aspects of Japanese hair straightening:
Positive:
- Results in pin-straight hair that lasts up to six months.
- Adds shine to hair.
- Reduces hair frizz.
- Uses a cystine-based solution and does not carry the risk of formaldehyde exposure.
Negative:
- The process involves the use of chemicals that can be harmful to hair.
- The treatment can take two to four hours, depending on hair length and type.
- The cost of Japanese hair straightening ranges from approximately $400 to $800.
- The process is permanent and cannot be undone if the results are not satisfactory.
The ingredients or materials used in Japanese hair straightening include cystine and ammonium thioglycolate. However, some variations of hair smoothing or straightening procedures may contain harmful chemicals such as cyclosiloxanes, diethanolamine, formaldehyde, and metals. It is important to find a reliable stylist and salon, do a strand test, and be honest about hair type and procedure history before getting the treatment.
