Yes, you can have a keratin treatment on coloured or bleached hair, and in many cases it can even help restore softness, shine, and strength. Keratin works by smoothing the cuticle and reinforcing weakened strands, which is especially beneficial if your hair feels dry or compromised after colouring or lightening.
However, timing and product choice are crucial to protect your hair and maintain your colour.
What You Need to Know Before Getting Keratin on Coloured or Bleached Hair
Wait at least two weeks
Your hair needs time to settle after colouring or bleaching. Waiting around two weeks gives the cuticle a chance to close and reduces the risk of over-processing or sensitivity.
Choose the right formula
Bleached and colour-treated hair is more delicate, so opt for a gentle, low-pH, formaldehyde-free keratin treatment. These are kinder to compromised strands and still deliver smoothing and shine.
Expect slight colour changes
Keratin treatments can sometimes shift colour slightly, particularly on lightened or highlighted hair. Blonde shades may appear a touch warmer or lighter, while darker or vibrant colours may soften. Your stylist may recommend a toner or refresh after the treatment.
Keratin can enhance your colour
When applied after colouring, a keratin treatment can actually help seal in the pigment, lock in shine, and reduce future fading.
Should You Colour Before or After Keratin?
It’s usually best to colour your hair before your keratin treatment. The smoothing process helps seal and protect the fresh colour. If you plan to colour after the keratin treatment, wait at least two weeks so the keratin can fully bond and settle into your hair.
Always Consult a Professional
Every head of hair is different, especially when bleaching is involved. A stylist can assess your hair’s porosity, strength, and overall condition to ensure the keratin treatment you choose is safe, effective, and tailored to your needs.
For more information about keratin treatment, send a contact form or call us on +61 3 9654 6958.

