During chemical texture services, which bonds are considered side bonds that are altered?

• A. Hydrogen bonds
• B. Salt bonds
• C. Side bonds
• D. Disulfide bonds

Answer: (C)

Side bonds are the weaker bonds in hair—hydrogen bonds and salt bonds—that respond to processing conditions. During chemical texture services, changes in pH, moisture, and heat weaken and rearrange these bonds, allowing the hair to take on a new shape. After processing, when the moisture and pH return to normal, these bonds re-form in the new configuration, helping to lock in the texture. The term side bonds is used to describe this group because they are the bonds most readily altered by chemical treatments, in contrast to disulfide bonds, which are the stronger, primary bonds that are directly broken and reformed to create permanent changes.