You want a concentration that's effective without causing irritation, which is why non-irritating formulas are ideal, making it suitable for all skin types
This results in a smoother, more consistent complexion
There is no one-size-fits-all option
Biological compartments that can be assessed non-invasively (urine, menstrual blood, saliva, feces, cervical mucus), have not been studied on a large scale
At Bellus Touch, our B12 treatments are designed to target weight management, energy enhancement, and overall health
A common approach is to apply GHK-Cu in the morning and retinol at night, or to alternate days while your skin builds tolerance