As of my last update in September 2021, System Professional is a well-known brand of hair care products. Their range includes shampoos, conditioners, masks, oils, and styling products.

System Professional believes in a scientific approach to hair care, stating that everyone's hair is as unique as a fingerprint. This belief led to the development of the EnergyCodeTM technology, a complex diagnostic system that assesses individual hair needs and provides personalized product recommendations.

Some of their well-known product lines as of 2021 include:

1. Repair Line: This line is designed to restore and protect damaged hair. It includes products like the Repair Shampoo, Repair Conditioner, and Repair Mask.

2. Color Save Line: This line is designed to maintain the vibrancy and longevity of color-treated hair. It includes the Color Save Shampoo, Color Save Conditioner, and Color Save Mask.

3. Hydrate Line: This line is designed to hydrate and moisturize dry hair. It includes the Hydrate Shampoo, Hydrate Conditioner, and Hydrate Mask.

4. Smoothen Line: This line is designed to smoothen and control frizzy and unruly hair. It includes the Smoothen Shampoo, Smoothen Conditioner, and Smoothen Mask.

5. Volumize Line: This line is designed to add volume and body to fine, limp hair. It includes the Volumize Shampoo, Volumize Conditioner, and Volumize Mask.

These are just a few examples of their range. For the most up-to-date information, please visit the official System Professional website or consult with a hair care professional who can provide more details based on the latest product lines and technologies.