What are the most common causes of eyebrow loss?

Eyebrow loss most commonly occurs due to over-plucking or laser hair removal, physical injury (chemical injury or burn). Sometimes it occurs after skin tumor removal or after cosmetic surgery (brow-lift).There are also systemic disease that result in eyebrow loss (hyper and hypo thyroidism). Chemotherapy or birth control pills are amongst medications that cause eyebrow loss the most. Frontal fibrosing alopecia (FFA) is a scalp condition that causes losing the hairline but very often it presents with eyebrow loss. Congenital eyebrow loss can occur as well, but also some skin diseases cause eyebrow loss such as eczema, infection, tuberculosis or alopecia areata.

Is eyebrow restoration a safe procedure?
Where do those hairs come from that you are transplanting into eyebrows?
How is the procedure done?
Does the result look natural?
How long should I wait until I see final result?
Are new eyebrows permanent and is there any special care that should be done?
Does permanent make up or prior eyebrow tattooing interferes with eyebrow restoration?
Are there any complications after the surgery?
Is everyone a good candidate for eyebrows?
How long after the procedure should I avoid sun exposure?
Can I resume sports activities after the procedure?
What is the price of the procedure?