The WaveBuilder Side Lift Wave Serum is designed to enhance wave definition and activate curls, particularly on the sides and on hard-to-wave hair. This serum nourishes both hair and scalp, promoting a healthy, natural-looking shine. With a lightweight formula, it softens and conditions hair, making it easier to form and maintain waves. The serum is unscented and comes in a convenient 4.1 fluid ounce bottle, perfect for daily use to achieve and maintain stylish waves.