What Are the Positive and Negative Reviews for Keratin Hair Treatment?


Quick Answer

Keratin treatments smooth hair for a long period of time, reducing straightening time and making styling easier, and most reviews praise their effectiveness. However, negative reviews tend to look at the prevalence of potentially harmful chemicals used to do the job.

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What Are the Positive and Negative Reviews for Keratin Hair Treatment?
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Full Answer

Keratin treatments combine conditioners and a proportion of keratin, the protein found naturally in hair, with an aldehyde such as formaldehyde. The keratin strengthens the structure of the hair, while the aldehyde's chemical reaction with the hair produces the straightening effect. It is impossible to create these treatments without some form of chemical addition, and some reviews of these treatments focus on negatives such as chemical smells, harshness and concerns about potential carcinogenic effects.

However, advanced versions of these treatments do minimize the proportions of harsh chemicals used, reducing the odor problem. It is also the opinion of many hairdressing professionals that quantities of the chemicals present aren't large enough to harm users. Some treatments allow users to wash their hair almost immediately afterward, eliminating the three-day waiting period before further hair maintenance that is another frequently voiced complaint.

Most reviews note that keratin treatments of all varieties do work as advertised to improve the manageability of hair and reduce the need for straightening, which can mean an overall reduced level of treatment damage.

Learn more about Chemical Hair Treatments

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