Keranique Follicle Boosting Hair Serum 60mlApplication Guide Apply the serum to dry or towel dried hair. Spray it directly onto your scalp and use your fingertips to massage it in. Do not rinse. To achieve thicker and fuller hair, use the Keranique Lift & Repair Spray during styling. THICKNESS, FULLNESS, & DENSITY: This Follicle Boosting Serum is a weightless, fast absorbing daily serum for energizing the scalp while revitalizing hair follicles with cutting edge skin and hair care ingredients