The Balmain Hair Couture Overnight Repair Serum is a luxurious hair treatment specifically designed for adult users with hair extensions. This 30ml serum contains active ingredients such as coconut oil, rosmarin, chia seed oil, and kernel oil, providing deep nourishment and repair for damaged hair. Its oil formulation helps to hydrate and protect the hair while promoting a healthy shine and sleek finish. Perfect for restoring and maintaining the beauty of your hair extension, this serum is a must-have for anyone looking to achieve a salon-quality finish at home.