How to Do a Shampoo Cap to Lighten Hair: Expert Tips

Medically reviewedby Dr. Bilal Khan M.B.B.S.
WrittenbyDr. Edna Skopljak, M.D.
Last updated

Dr. Bilal Khan M.B.B.S earned his medical doctorate at Sindh Medical College, Jinnah Sindh Medical University in Karachi, Pakistan. In September 2023, he successfully passed the United States Medical Licensing Examination (USMLE), achieving certification to practice medicine internationally. Read more...

Looking to freshen up your hair color or go a few shades lighter without a complete recolor? A shampoo cap, also known as a bleach wash or color balancer, could be the solution. This method involves mixing your hair color or bleach with shampoo to gently lighten your hair. Below we'll outline how to do a shampoo cap to lighten hair, plus some tips for post-lightening hair care.

How To Do A Shampoo Cap To Lighten Hair?

A shampoo cap is an effective and gentle way to lighten your hair. Here's a simple step-by-step guide:

  1. Mix your hair color or bleach with equal parts shampoo.
  2. Apply the mixture to your hair, ensuring it's thoroughly saturated.
  3. Once your hair is covered with the mixture, put a shower cap over it. This will help the process and prevent the mixture from dripping.
  4. Allow the mixture to process for 5-10 minutes. Be sure not to leave it on too long as this can cause damage to your hair.
  5. After processing, rinse your hair thoroughly, then shampoo and style as usual.
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Post-Lightening Hair Care

After lightening your hair, it's essential to take good care of it to maintain its health and shine. Here's a simple moisturizing mask you can do at home:

  • Mix ½ tbsp of melted coconut oil and 1 tbsp of olive oil.
  • Apply a generous amount to your hair, focusing on the ends which tend to be the driest.
  • Cover your hair with a shower cap and wait for 1 hour.
  • Wash the mixture out with your everyday shampoo and rinse well.

Conclusion

A shampoo cap can be a great way to lighten your hair without causing excessive damage. It's an easy process that you can do at home, and with proper post-lightening care, your hair can look and feel fantastic. Remember, it's always essential to monitor your hair's health and consult a professional if you're unsure about the process.

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Dr. Edna Skopljak, M.D.

About the Writer

Edna Skopljak, MDUniversity of Ljubljana, Faculty of Medicine

Edna Skopljak, MD is a clinical doctor at the University Medical Center Ljubljana and a PhD candidate in Biomedicine at the University of Ljubljana. She combines clinical work with research and medical editing, bringing a clear, evidence-based lens to patient education. Previously, she held roles in the pharmaceutical sector (product management and chief medical officer) and served as a medical production editor for the journal Biomolecules and Biomedicine.

Dr. Skopljak’s publications span clinical topics, including urology and orthopedics. She has co-authored work affiliated with the Department of Orthopedic Surgery at University Medical Centre Ljubljana. She trained in medicine with early clinical experience in Slovenia, reflecting a long-standing focus on practical, patient-facing care.

She strictly follows our Editorial Standards: All medical statements are grounded in authoritative guidelines, FDA labels, and peer-reviewed studies, with clear distinction between approved treatments and adjunctive options.