This invention generally relates to an electromagnetic treatment apparatus and a method for using same to achieve modification of cellular and tissue growth, repair, and maintenance, and tissue function by application of electromagnetic information. Particularly, the invention relates to using pulsing electromagnetic fields (PEMF) of very low energy to enhance growth and repair of cells and tissues involved in hair growth and regeneration. More particularly, this invention provides for methods, which are directed to treating hair thinning and/or loss by promoting the maintenance, growth, and restoration of hair by delivery of electromagnetic signals to a target tissue, such as scalp tissue. The electromagnetic signals promote hair cell maintenance, growth, and restoration by modulating biochemical processes that regulate hair cells, such as prostaglandin levels, resulting in stimulation or enhancement of growth, proliferation of hair cells, and or limiting/eliminating hair loss.