Apply Treat to hair roots and onto scalp by holding the nozzle close to areas of treatment. Gently massage in treat with fingertips for penetration. Treat is a leave-in scalp and root treatment so there is no need to rinse. Temporary redness may occur in areas of treatment due to increased circulation. This is normal and a sign of the treatment working. To prove how effective Reviv3 is, we subjected it to a rigorous study from a nationally recognized independent laboratory. The results speak for themselves: 300% increase in hair strength 75% reduction in broken hair fibers 81.51% improvement in pH scalp health 72.7% of participants showed improvements in hair density 75.8% of participants showed improvements in hair thickness 100% of participants experienced improvements in scalp health 97% of participants showed improvements in circulation