There are two types of products when it comes to making your hair stronger:
- Bond Repairing products, and
- Conditioning products
Bond Repairing products
These products improve the strength and mechanical properties of the hair fiber. They contain ingredients like peptides that can able to restore broken hair bonds which are responsible for providing strength and mechanical properties (elasticity, smoothness. volume, and shine) to the hair. They also contain disulfide bonds which bind the keratin proteins in your hair or peptides which bind to the hair fiber.
By using these ingredients, the hair bonds get repaired and brings back the strength and mechanical properties of the damaged hair.
These products do not actually improve the strength and mechanical properties of the damaged hair. They help to reduce the hair breakage due to the friction between the hair bonds. These products contain ingredients that work only on the surface of the hair fibers, but they do not repair the hair bonds.
The fact that your hair breaks are usually a result of the entanglements of fibers when in contact with a comb or brush and is caused by inter-fiber friction. This is because hair is negatively charged and this leads to friction.
This friction can be reduced by conditioning agents. The conditioner will reduce hair breakage, but it does not make your hair stronger.
You can choose products that contain conditioning agents and it will help to reduce friction.