A thermal press is used to

A thermal press is used to

• A. Temporarily straighten extremely curly hair with a pressing comb
• B. Permanently straighten hair with chemical relaxers
• C. Create waves using a curling iron
• D. Relax hair using chemical relaxer

Answer: (B)

Thermal pressing relies on heat applied with a heated comb to temporarily straighten very curly hair. The heat smooths the hair by temporarily breaking hydrogen bonds, allowing the strands to lie straight, but since no chemical bonds are permanently altered, the straightening lasts only until the hair is washed or exposed to humidity. This is distinct from chemical relaxers, which permanently rearrange the hair’s bonds, and from curling irons that mainly create waves rather than a full straightening. So a thermal press is the method used for temporary straightening with a pressing comb.

Thermal pressing relies on heat applied with a heated comb to temporarily straighten very curly hair. The heat smooths the hair by temporarily breaking hydrogen bonds, allowing the strands to lie straight, but since no chemical bonds are permanently altered, the straightening lasts only until the hair is washed or exposed to humidity. This is distinct from chemical relaxers, which permanently rearrange the hair’s bonds, and from curling irons that mainly create waves rather than a full straightening. So a thermal press is the method used for temporary straightening with a pressing comb.