At the start of treatment, you may experience a temporary increase in hair shedding (the shedding effect). This is caused by the activation of hair follicles—loose hairs in the so-called resting phase are shed more quickly. This is not additional hair loss and is a positive sign that the treatment is taking effect. To minimize this effect, apply Thymuskin Serum every other day for the first 4 weeks, then daily thereafter. However, sudden, severe hair loss is not related to the use of Thymuskin. Hair loss usually occurs in waves, so there may be some overlap in timing.