Peak Human

Stronger follicles. More hair.

Duo cosmetic has been shown to work synergistically to increase the lifespan of hair follicles. Duo is most effective against hair loss caused by a zinc deficiency.

You, optimized.

Zinc deficiency can cause mild to severe hair loss in both men and women. Zinc is instrumental in keeping the oil glands around hair follicles functioning properly. Without it, the follicles are affected. 

Peak Human Duo Hair Serum has demonstrated the ability to increase the lifespan of hair follicles. Duo Hair Serum combines GHK-Cu and Zn-thymulin to heighten zinc absorption and speed the restoration of hair growth leading to thick, lustrous hair.

Duo Hair Serum Key Ingredients

Get your hair back.


GHK-Cu is is a naturally occurring copper complex found in human plasma. It can strengthen existing hair which increases the hair’s thickness.


Zn-thymulin is a combination of zinc and Thymulin. Thymulin helps extend the anagen phase of hair follicles which is important for hair loss treatment.

The Path to Wellness. Naturally.

All Peak Human products are produced in an FDA-inspected USP-797-compliant sterile plant operated by a certified team of compound pharmacists. Free of toxins and harsh synthetics, Peak Human supplements are natural, vegan, and GMO-free.

Healthy People. Happy Planet.

Optimal is the new normal.

You don’t have to suffer from something treatable. All-natural Peak Human supplements support the body’s natural systems for healthy cells, brain function, skin, hair, muscle, and mood.

Without toxins or synthetic chemicals, Peak Human products contain research-proven ingredients that boost the body’s natural ability to be healthy.