Mascara applicator

A brush for applying a cosmetic product to the eyelashes and/or eyebrows, comprising:

• a core of plastic material, having a longitudinal axis,
• wherein spikes are carried by the core, extending from the core, and attached to the core,
• wherein the spikes are arranged at least in a first row of spikes extending longitudinally and including a series of at least four consecutive spikes positioned on the core at respective abscissae x1 to x4 along the longitudinal axis of the core, with distances di=Xi+1−Xi between the spikes of abscissae xi+1 and xi, i being an integer comprised between 1 and 3, being different in pairs, and
• wherein the core carries at least a group of four rows, composed of said first row and of other rows, which are repeated several times angularly over the core, each row of said group comprises spikes of unequal sizes and spikes of unequal heights, each of said other rows includes a series of at least four consecutive spikes positioned on the core at respective abscissae x1 to x4 along the longitudinal axis of the core, with distances di=xi+1−xi between the spikes of abscissae xi=1 and xi, i being an integer comprised between 1 and 3, being different in pairs.