Keratin is a fibrous protein that makes up the main structure of nails, hair, and the outer layer of skin. Without keratin, the nail plate would not have its durability, elasticity, or protective function.
The nail plate consists of several layers of tightly packed keratin cells, which provide:
- Strength and resilience,
- A smooth, even surface,
- Protection from external damage.
When keratin is healthy, nails are clear, smooth, and strong. If the keratin structure is compromised, nails become brittle, dull, and prone to peeling or splitting.
Factors That Weaken Keratin
There are several common reasons why the keratin structure of nails can be damaged:
- Chemical exposure – harsh cleaning products, frequent gel or shellac removal.
- Mechanical stress – aggressive filing, impacts, or improper cutting.
- Lack of care – insufficient moisture or protective oils.
- Poor nutrition – low protein, vitamin, or mineral intake.
- Environmental factors – extreme temperatures or frequent hand washing without protection.
Strengthening the Keratin Structure
Keratin cannot be directly “applied” from the outside, but its quality can be supported through proper nail care:
- Gentle manicure techniques – avoid excessive cuticle removal or rough filing.
- Nourishing oils – such as jojoba, almond, or vitamin E oil.
- Hydration – regular hand and nail creams prevent dryness and cracks.
- Protection – wearing gloves when cleaning or washing dishes.
- Balanced diet – sufficient protein, biotin, zinc, and iron intake.
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