Ingredients in Shampoos and Conditioners That Cause Hair Loss

Eh... I blog about this for my own purpose. Because I am having terrible hair fall/loss and now from thick hair, it is turning thinner. I don't like it. I must find ways to eliminate this thing.  So I hope this post is a good start for myself. Crossed my fingers. I will be very careful from now in choosing shampoos. U may want to read on to find out more if you are having the same problem as me. No harm. I am going back home later to check it out all the shampoos at home.  Arrgh...

Ingredients in Shampoos and Conditioners That Cause Hair Loss

Shampoos and conditioners are marketed as being formulated to keep hair healthy, shiny and free of dandruff and tangles. Despite this, many shampoos on the market contain ingredients that may actually damage hair and irritate the scalp. In extreme cases, some of these ingredients may even cause or exacerbate hair loss. These additives can be avoided by taking the time to read the labels on hair care products.


Sodium lauryl sulfate (SLS) and ammonium lauryl sulfate (ALS) are surfactants found in many inexpensive shampoos because they produce a large amount of foam. According to and the Journal of the American College of Toxicology, these sulfates were found to be irritants in patch tests at concentrations of 2 percent and greater, which is a much lower concentration than the 20 percent found in many shampoos. Additionally, rat studies have shown both SLS and ALS cause damage to hair follicles, potentially resulting in hair loss. Sodium and ammonium laureth sulfate, which are closely related to the aforementioned ingredients, were found to have irritant effects as well.

Sodium Chloride

Sodium chloride, better known as table salt, is used as a thickener in shampoos and conditioners containing sodium lauryl sulfate. It's a contributing factor to the eye irritation experienced with most shampoos, and it may also cause dry and itchy scalp. According to, salt may also cause some hair loss. In shampoos containing ammonium-based surfactants, ammonium chloride is used instead.


Formaldehyde is used in some shampoos and conditioners, including baby shampoo, as a preservative because of its low cost and disinfectant qualities. It is also used for embalming. According to, in 1983, the Division of Cancer Cause and National Cancer Institute recommended further investigation of formaldehyde as a possible carcinogen. Additionally, formaldehyde may cause damage to DNA, and excessive exposure to formaldehyde may cause some hair loss.


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