System Professional | Balance Energy Serum $108.00 Or 6 weekly interest-free payments from $18.00 What's this? Default Title - $108.00 Quantity This product is currently sold out. Please fill in the form below if you'd like to be notified when it becomes available. Wella SP Balance Scalp Energy Serum delicately balances and soothes sensitive scalps as well as strengthening thin hair to reduce hair loss. Intensive strengthening serum with patented formula. Makes thinning hair stronger. Can reduce hair loss by up to 50%*. Related to congenital hair loss.