Sebastian Professional Thickefy Foam Hardener, 190 ml bottle, an innovative treatment designed to give body and volume to thin hair and lack vitality. Thanks to its advanced formula, it acts in depth to strengthen the hair structure, improving the elasticity and resistance of the fiber. The light foam distributes easily, offering a natural hold without weighing it down, ideal for long-lasting styling with a volumizing effect. Perfect for those who want thick, full-bodied and healthy-looking hair, this product is a daily ally to enhance any type of hairstyle. Regular use helps maintain softness and shine, ensuring visibly fuller and more vital hair.