Keratin and Its Role in Nail Plate Strength

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. At MONLIS School Munich, students learn why understanding keratin is essential for professional manicure services and how to strengthen nails without damaging them.

Structure of the Nail Plate

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:

1. Chemical exposure – harsh cleaning products, frequent gel or shellac removal.

2. Mechanical stress – aggressive filing, impacts, or improper cutting.

3. Lack of care – insufficient moisture or protective oils.

4. Poor nutrition – low protein, vitamin, or mineral intake.

5. Environmental factors – extreme temperatures or frequent hand washing without protection.

At MONLIS School Munich, students are trained to recognize these factors and offer clients effective solutions.

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.

Keratin Education at MONLIS School Munich

An important part of the curriculum is nail anatomy theory. Students learn:

• the chemical composition of keratin,

• the process of nail growth,

• common causes of keratin damage,

• prevention strategies for brittle nails,

• how to educate clients about proper care.

This knowledge allows graduates to provide not only beautiful but also healthy, sustainable results.

Professional Techniques for Nail Health

Students also receive hands-on practice in keratin-friendly techniques:

• gentle polishing and shaping,

• proper use of strengthening products,

• applying protective coats,

• designing individualized care routines.

This ensures they can maintain and enhance the natural keratin structure of their clients’ nails.

Keratin is the foundation of strong, healthy, and beautiful nails. Without proper care and protection, nails can become weak and brittle.

At MONLIS School Munich, future professionals receive comprehensive training that combines theory and practice, enabling them to protect keratin integrity and promote long-term nail health for their clients.