Why do keratin hair extensions crumble?

Of course, keratin hair extensions are not supposed to crumble at the base itself but sometimes this does happen. These are the most common causes:

• the keratins were not closed quite correctly during placement
• the keratins have small fracture lines
• the hairdresser uses heat tongs to place the hair extensions
• overheating occurred on the keratintes
• the hairdresser does not handle our cold ultrasonic device correctly
• the hairdresser opens & closes the tongs of the ultrasonic device more than 3 times
• ultrasonic device pliers are obsolete & need to be replaced
• the client uses haircare products that are not suitable for the sutures
• the customer got too close to the keratin bonding with a heat device such as hair dryer, straightener or curling iron
• the client is in a shedding period which allows air to enter the keratins & thus has the potential to crumble