Permanent, scarring alopecia is a ‘secondary’ cicatricial alopecia and is caused by external damage to hair follicles.
Anabel Kingsley Brand President
March 28, 2022
These include damage from cosmetic burns from hot combs,straightening irons, radiotherapy,chemical straighteningand also from trauma involving the scalp (such as car accidents or a bad fall). Although rare, permanent hair loss from these methods can either be an immediate bald patch, or cumulative hair loss from repeated damage.
Some birth control pills can protect hair follicles which may help slow the hair thinning process, because they increase your oestrogen levels and/or diminish your levels of testosterone