What are the three types of side bonds in hair?

The correct identification of the three types of side bonds present in hair is crucial to understanding hair structure and chemical properties. In this case, hydrogen, salt, and disulfide bonds play significant roles in maintaining the integrity and properties of hair.

Hydrogen bonds are weak interactions that occur between the hydrogen atoms of one water molecule and the oxygen atoms of another. In hair, these bonds contribute to its shape and texture and can influence how hair responds to moisture. When hair is wet, the hydrogen bonds break and reform as the hair dries, allowing it to change shape.

Salt bonds, or ionic bonds, are formed due to the attraction between positively and negatively charged amino acids in the hair structure. These bonds help stabilize the protein structure and also play a role in the overall strength of the hair. Like hydrogen bonds, salt bonds are also temporary and can be disrupted by changes in pH.

Disulfide bonds are much stronger than hydrogen and salt bonds and are formed between cysteine amino acids, which contain sulfur. These bonds create a more permanent link within the hair's protein structure and are crucial for determining the strength and shape of the hair. They are particularly relevant in the context of chemical treatments like perming and relaxing, where breaking and reforming these