- home -
- Scientific Area/hair and scalp
Scientific Area
HAIR AND SCALP
-
Structure and chemical composition of hair
The hair on our bodies has a particular structure and is divided into thin and thick hair. Thin hair, also called lanugo or vellus, is located on all skin surfaces except for the palms of the hands and the soles of the feet. Thick hair, also called terminal hair, is ...
-
Structure and chemical composition of the scalp
The scalp is an ultra-specialized area of the skin, where hair is anchored. Like other hair, also the hair on the scalp originates from a hair follicle, called a bulb.
-
Life cycle of hair
The life cycle of hair and its subsequent growth occur at a speed of 1-1.5 cm per month. Hair is a living element that follows a follicle cycle with an average duration of 2-6 years. In humans, unlike other mammals that are subject to a periodic change, this cyclic evolution ...
-
Hair follicles and bulbs
A hair follicle is a formation of epidermal origin, anchored in the dermis and consisting of a hair and its sheath. The formation of hair follicles occurs early. They begin to appear as early as the second month of gestation. These follicles will continue to form for the entire duration ...
-
Sebaceous glands
The sebaceous glands are glands that secrete sebum, an oily, acidic substance with a pH of 3.5. They are connected laterally to the hair follicle. Sebaceous glands are found with a density of approximately 100/cm2 throughout all areas of the skin. In the human body, they are located across the ...
-
Hair types and morphology
Some parameters and characteristics should be taken into consideration when assessing hair types and morphologies: shape, density and appearance. The appearance of hair, in the form of lanugo, occurs during the fourth month of pregnancy.Hair grows at a rate of around 0.3 mm per day, or rather 1 cm per ...
Do you need any info?
USE OF PERSONAL DATA
Disclaimer copy In accordance with EU law, I/we consent to the processing of my / our personal data by your company for purposes related to the business. Under no circumstances may the data be disclosed to others for use other than those inherent to the relationship with Cesare Ragazzi Laboratories and Layout Advertising Group. I / we also consent to the processing of my / our personal data which may also be shared using electronic and / or automated methods. I / we also consent to the processing of my / our personal data by companies, organizations or consortia that provide specific processing services, as well as to persons to whom the right to access my / Our personal data is recognized by law or secondary legislation.