KMS Add Volume Styling Foam is a styling foam that gives hair up to 70% more volume, making thin ends appear thicker and providing long-lasting volume for up to 72 hours. This styling foam is perfect for those who want to add volume to their hair without weighing it down. Its lightweight formula provides long-lasting volume for up to 72 hours, making it perfect for those who want to keep their hair looking voluminous throughout the day. The foam also makes thin ends appear thicker, giving the hair a fuller, more voluminous look.