Extensions & Special Brush

Brushing hair extensions
Photo: Nadyatess/Shutterstock
Q: Some of my hair broke off after an unfortunate highlighting and I need a few extensions to fill in the missing spot. What is the best form of application? Keratin bonds, glue? A salon also asked that I buy a special brush to use on the extensions. Is this really necessary?
 
A: The condition of your natural hair must be the absolute first consideration. If the breakage was caused by highlighting, your hair is severely compromised and fragile in that area. Extensions add weight and tension, so placing a standard extension system onto already damaged strands risks snapping them entirely. A qualified specialist must examine the hair first to determine if it can safely support any hair extensions.
 
While fusion methods (keratin bonds) offer a seamless, long-lasting look and allow precise placement in small spots, they are often risky for chemically broken hair. The application requires high heat to melt the bond onto individual strands, and concentrating weight on a single narrow point can trigger further breakage.
 
For localized damage, lightweight micro-tape-ins (which spread weight across a wider strip of hair without heat) or temporary clip-ins are usually safer options while your natural hair recovers. Extensions do not repair hair, they merely cover damage, and improper application can compound the problem.
 
As for the special brush, it is absolutely necessary. Standard hairbrushes feature round, ball-tipped bristles that catch on attachment points, ripping out bonds along with your natural hair. Extension brushes use soft boar bristles or looped nylon bristles that slide smoothly over attachment zones without snagging.
 
Looped bristles hair extensions brush
 
The brushing technique is equally vital: always work gently from the ends upward while firmly holding the hair near the root. Supporting the base isolates tension so your brushing force does not pull directly on the attachments.
 
Buying the recommended brush protects your service guarantee. Most professional salons explicitly void their warranties or complimentary correction policies if you decline their recommended home-care tools. Keep your receipt and written aftercare instructions so the salon cannot attribute any premature shedding or bonding issues to improper home care.
 
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See also:
 
Cold fusion hair extensions
 
How to choose a good hairbrush
 
Hair combing and brushing basics