Skip to main content
  • Deutsch
  • English
  • français
  • Español
  • Italiano
  • Nederlands
  • Australia

    Australia

    (AUD $)

  • Austria

    Austria

    (EUR €)

  • Belgium

    Belgium

    (EUR €)

  • Bulgaria

    Bulgaria

    (BGN лв.)

  • Canada

    Canada

    (CAD $)

  • Croatia

    Croatia

    (EUR €)

  • Cyprus

    Cyprus

    (EUR €)

  • Czechia

    Czechia

    (CZK Kč)

  • Denmark

    Denmark

    (DKK kr.)

  • Estonia

    Estonia

    (EUR €)

  • Finland

    Finland

    (EUR €)

  • France

    France

    (EUR €)

  • Germany

    Germany

    (EUR €)

  • Greece

    Greece

    (EUR €)

  • Hong Kong SAR

    Hong Kong SAR

    (HKD $)

  • Hungary

    Hungary

    (HUF Ft)

  • Ireland

    Ireland

    (EUR €)

  • Israel

    Israel

    (ILS ₪)

  • Italy

    Italy

    (EUR €)

  • Japan

    Japan

    (JPY ¥)

  • Latvia

    Latvia

    (EUR €)

  • Lithuania

    Lithuania

    (EUR €)

  • Luxembourg

    Luxembourg

    (EUR €)

  • Malaysia

    Malaysia

    (MYR RM)

  • Malta

    Malta

    (EUR €)

  • Netherlands

    Netherlands

    (EUR €)

  • New Zealand

    New Zealand

    (NZD $)

  • Norway

    Norway

    (EUR €)

  • Poland

    Poland

    (PLN zł)

  • Portugal

    Portugal

    (EUR €)

  • Romania

    Romania

    (RON Lei)

  • Singapore

    Singapore

    (SGD $)

  • Slovakia

    Slovakia

    (EUR €)

  • Slovenia

    Slovenia

    (EUR €)

  • South Korea

    South Korea

    (KRW ₩)

  • Spain

    Spain

    (EUR €)

  • Sweden

    Sweden

    (SEK kr)

  • Switzerland

    Switzerland

    (CHF CHF)

  • United Arab Emirates

    United Arab Emirates

    (AED د.إ)

  • United Kingdom

    United Kingdom

    (GBP £)

  • United States

    United States

    (USD $)

Understanding Hair Growth: A Comprehensive Guide to the Factors Affecting Your Hair

Haarwachstum verstehen: Einflussfaktoren und Wachstumsraten

Introduction to the topic of hair growth rates

The speed of hair growth cannot be generalized. Various factors such as hair type, gender, age and other influencing factors play a role. In this guide, we'll get to the bottom of the secrets of hair growth and highlight some fascinating facts and figures.

Average growth rates

On average, hair grows by around 0.3 to 0.5 mm every day, which corresponds to around 1 to 1.5 cm per month and 12 to 15 cm annually. However, these numbers vary depending on age, hormonal status and ethnic origin. For example, Asians' hair generally grows faster than Africans'.

Seasonal and daily fluctuations

Interestingly, hair grows faster in summer than in winter and slower at night than during the day. Men generally have thicker and slightly faster-growing hair than women. For more in-depth information about the individual phases of the hair growth cycle - anagen, catagen and telogen phases - see the hair cycle section.

Hair count: How many hairs do we have?

On average, people have around 100,000 hairs on their head. Blondes often have more, up to 150,000 (although finer hairs), people with dark hair around 100,000 and redheads around 80,000 hairs. The number of hairs is genetically determined.

The thickness of the hair

Central European hair has an average thickness of 0.06 mm. Asian hair is typically between 0.06 – 0.08 mm thick, while African hair is the finest at 0.04 to 0.5 mm.

What is hair made of?

A hair consists of the hair shaft and the hair root. The hair root is located in the dermis and is surrounded by a hair follicle. The shape of this follicle determines whether the hair is straight or curly: round follicles result in straight hair, oval ones result in curls.

The hair shaft contains the pigment that determines our innate hair color. Hair is made of keratin, melanin, sulfur, water and lipids – they are essentially horny filaments. If the hair contains too little keratin or is too dry, it often appears dull and brittle.

Hair Loss: Normality vs. Excessive Loss

Normally a hair falls out after two to six years, with daily loss of 50 to 100 hairs considered normal. However, more than 100 hairs falling out per day is considered hair loss.

Common types of hair loss are hereditary androgenetic alopecia and diffuse hair loss, which depends on the living conditions of those affected. Incidentally, the thickness and length of the hair do not play a role in the development of hair loss; it begins in the hair follicles of the scalp.

Conclusion

Understanding the complexities of hair growth can help us better care for our hair and recognize when hair loss might be a concern. For more in-depth information and tips on promoting healthy hair growth, stay tuned to our blog.