Most people who ask about "hair thickening" really want hair volumizing. If you have fine hair and use hair thickening products, the product makes each strand thicker but also heavier - so your hair can look even flatter! This Hub has tips on how to give volume to fine hair:hubpages.com/hub/Volumize-fine-flat-hair.
The hair is made up of about 95% protein, which are actually polypeptide proteins or amino acids. Ask your doctor if you can take amino acids. Hair will become a little coarser.It will take awhile but it will also make a difference in your nails.
The problem with taking amino acids and/or Vitamin A is that they give strength to tumors because tumors are also proteins.
I've been using henna and other Indian herbs on my hair for about a year. I use henna to cover the grey and it makes hair thicker and so does the other Indian herbs. I wrote a hub on henna.
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