The invention relates to a system (1) for stimulating hair growth in a pre-determined area of skin, comprising: means (31) for generating high-voltage alternating current, means (35, 36) for generating a variable electric field from the high-voltage alternating current generated, and means (11) for applying the generated variable electric field to a pre-determined area of skin. In addition, the means for generating a variable electric field include at least two radiating elements (35, 36), while the means for generating high-voltage alternating current include a transformer (31), the primary of said transformer being disposed in relation to the core in such a way that, during operation, the radiating elements (35, 36) generate a variable electric field with a radiation pattern that concentrates its energy close to the means (11) for applying the variable electric field.