Hair Thickness DNA Test

Why do you have thick hair? Find out how genetic variants are linked to hair thickness with this DNA test.

  • Includes the EDAR gene associated with thick hair
  • Individuals of East Asian descent are more likely to carry this genetic variant
  • 100% private and confidential online results

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Detailed Description

The thickness and texture of our hair depends on the size and shape of our hair follicles, pockets located in the skin of our scalp that are responsible for growing hair.

Those of us with follicles that are large in size have thick hair, while small follicles lead to having thin hair. People of East Asian and Native American descent usually have thicker hair than those of African or European descent.

Take this test to uncover the genetics behind your hair texture and whether you are more likely to pass on thick hair to your children.

The Genetics

Many genes contribute to the texture and thickness of human hair. This test examines one genetic variant in the EDAR gene linked to hair thickness in East Asians. The EDAR variant is found in 88% of East Asians, who tend to have hair fibers that are on average 30% larger than those of African descent and 50% larger than those of European descent.

The EDAR gene provides instructions for the ecotdysplasin-A receptor protein, which is involved in the development of hair follicles, teeth and sweat glands. Individuals with the “thick hair” variant produce more of the ecotdysplasin-A receptor protein, resulting in enhanced hair thickness.

Changing the Texture of Your Hair 

If you have thin hair, you may have already tried a few DIY remedies offered on the internet to enhance the thickness of your hair. However, you can’t actually change the diameter of your hair follicles or the number of hair follicles on your scalp. Nevertheless, you may still want to try some of the following methods that stimulate hair growth.

  • Apply coconut oil or olive oil to your scalp 
  • Give yourself a hair massage
  • Try a new volumizing hair product to get the appearance of thick hair

How It Works

Step 1: Sign up for a free DNA Access account.
Step 2: Upload your DNA markers to DNA Access.
Step 3: Log In to your account to access your results when they are ready.