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Season 1: Questions from the Community

Practical Application

Dr. Manfred Groeppel 25.05.2026 00:53

In summary

  • Hair fibers and hairspray can both be used alongside the serum with no side effects 
  • 1 ml is enough for the entire scalp 
  • Less hair: apply directly onto the scalp 
  • More hair: part the hair first and apply the serum to the exposed area 
  • The serum is watery, spreads easily, and covers the full head with one application
FAQ

Practical Application

Can hair fibers or hairspray be used alongside the 8T3 Essentials Hair Serum?
Yes, both can be used at the same time. There are no side effects.
Is 1 ml of the 8T3 Essentials Hair Serum really enough per application?
Yes, 1 ml covers the entire scalp. For people with less hair, apply it directly onto the scalp. For those with more hair, part the hair first and apply the serum to the exposed area.
How thin is the 8T3 Essentials Hair Serum, and does that affect the dosage?
The product is watery in texture and spreads easily across the scalp. The consistency has no negative effect on dosage: 1 ml is sufficient for the entire head.

Description

Hair fibers and hairspray can both be used alongside the 8T3 Essentials Hair Serum without any side effects. 

On dosage: 1 ml per application covers the entire scalp. For people with less hair, the serum goes directly onto the scalp. For those with more hair, the experts recommend parting the hair first and applying the serum to the exposed area. That way it reaches the scalp rather than sitting on top of the hair. 

The product is watery in consistency and spreads easily. One millilitre is sufficient for the entire head, and the thin texture has no negative effect on the dosage.

Experts

Dr. Manfred Groeppel
Dr. Manfred Groeppel
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