What are some hair cosmetics and how do they work?

Hair cosmetics include products such as:

  • Hair dyes: Hair dyes can be temporary, semi-permanent, demi-permanent, or permanent.

  • Straightening treatments: Straightening treatments work by breaking down the disulfide bonds in the hair, which allows the hair to be straightened.

  • Styling products: Styling products can help to hold hair in place and add volume.