JVN Complete Instant Recovery Heat Protectant Leave-in Serum New without box 3.4 oz Strengthen your strands and minimize the appearance of split ends with our universal hair serum. Create balance and instantly smoother, healthier hair while repairing damage and protecting from heat with this groundbreaking Niacinamide and Charged Lemon Protein infused primer for hair. Perfect for everyone, including those concerned with heat damaged hair, frizz, or uneven hair porosity.