Can using the M2 Eyelash Activating Serum (EAS) lead to skin discoloration?

In rare cases, you might experience “hyperpigmentation” in the area where the serum is applied. This means that the skin becomes somewhat darker due to increased melanin, the brown skin pigment, in this area and/or the blood flow is stimulated. This effect disappears when you stop using the Eyelash Activating Serum (EAS).