Do I really need to wait 3 days to wash hair after keratin?

Yes, it is recommended to wait 3 days after a keratin treatment before washing your hair.

The process of keratin smoothing involves breaking down the hair’s natural bonds and rearranging them into a smoother, straighter configuration. When the hair is wet, it is more vulnerable to breakage. Washing your hair too soon could disrupt the new bonds formed during the treatment, leading to frizz, and damage.

Additionally, the heat from the blow dryer and styling tools used during the keratin treatment can cause the hair to become more susceptible to damage. Waiting 3 days allows the hair to cool and recover. During this time, it is important to avoid using any products containing sulfates or parabens as these can also damage the hair.

After 3 days, you can wash your hair as usual. However, it is important to use sulfate-free shampoo and conditioner to maintain the results of the treatment. You should also avoid using heat styling tools on a high setting.## Do I really need to wait 3 days to wash hair after keratin?

Executive Summary

Keratin treatments are popular for those looking to smooth their hair and reduce frizz. One of the most common questions about keratin treatments is how long one should wait to wash their hair after treatment.
This guide will address this question.
It will also explore the other important aspects of keratin treatments to provide a comprehensive understanding of this hair treatment.


Keratin treatments involve the application of a keratin solution to the hair. This solution is then sealed into the hair with heat, resulting in straighter, smoother, frizz-free hair. However, there is a common misconception that one must wait three days to wash hair after keratin. This article will explore the truth behind this claim and provide a detailed explanation of the recommended aftercare for keratin-treated hair.

Waiting Period

1. Hair Structure

The primary reason for the waiting period is to allow the keratin solution to fully penetrate the hair shaft and bond with the natural keratin of the hair. Waiting a sufficient amount of time, ideally 3 days, ensures that the keratin has had enough time to seal into the hair, resulting in longer-lasting results.

2. Chemical Bonding

During a keratin treatment, the keratin solution breaks down the disulfide bonds in the hair. This allows the keratin solution to penetrate the hair shaft and bond with the hair’s natural keratin. Waiting at least 72 hours allows these bonds to fully reform and strengthen, contributing to the durability of the treatment.

3. Heat Activation

Keratin treatments require heat to seal the keratin into the hair. While it is tempting to wash the hair immediately after the treatment to remove any residual solution, doing so can prevent the keratin from fully bonding with the hair and reduce the effectiveness of the treatment.

Recommended Aftercare

1. Sulfate-Free Shampoos

After a keratin treatment, It is crucial to use sulfate-free shampoos. Sulfates are harsh detergents that can strip the hair of its natural oils and damage the keratin treatment. Instead, opt for gentle, sulfate-free shampoos that will cleanse the hair without compromising the treatment’s integrity.

2. Avoid Heat Styling

Heat styling tools, such as blow dryers, flat irons, and curling irons, can damage keratin-treated hair. The high heat can break down the keratin bonds and cause frizz and damage. It is recommended to air-dry the hair or use low heat settings when styling.

3. Deep Conditioning

Regular deep conditioning treatments are essential for maintaining the health and appearance of keratin-treated hair. Deep conditioners penetrate the hair shaft and provide intense hydration, restoring moisture and preventing dryness and breakage.


While it is not strictly necessary to wait three days to wash hair after a keratin treatment, it is highly recommended to wait at least 48-72 hours** to allow the keratin to fully bond with the hair and achieve optimal results. By following the recommended aftercare instructions, you can extend the longevity of your keratin treatment and enjoy smooth, frizz-free hair for longer.

Keyword Phrase Tags

  • Keratin treatment
  • Hair care
  • Waiting period
  • Aftercare
  • Sulfate-free shampoos