A cat is born with all the hair follicles it will ever possess already in place. The hair grows in stages with new hair growing alongside old hair and from the same follicle. Not all follicles are in the same phase at the same time so cats tend to shed continually throughout the year. Although the coat may change in appearance and thickness, the number of hair follicles remains constant.
Related

There are three main types of skin gland: sebaceous, apocrine and eccrine. Sebaceous glands are located near the hair follicles and their function is to produce sebum, a natural oil that protects and waterproofs the skin and coat. Grooming maintains healthy skin by stimulating the production of sebum and aids…
June 2, 2014
In "Cat Grooming Issues"

The most beneficial way to maintain or restore a cat’s coat to a healthy condition is through a degreasing bath and blow dry. By removing dander, excess oil, and dead moulting hair, the resultant clean coat is better able to shed any excess hair.
June 2, 2014
In "Cat Grooming"

A cat’s naturally oily skin in combination with hair being shed throughout the year inevitably causes matting regardless of coat length. When a cat struggles with coat maintenance and general grooming, shed hair becomes trapped in its oily, greasy fur. As more hair sheds and accumulates, clumps of hair appear…
June 2, 2014
In "Cat Grooming Issues"