If your protocol requires taking them at the same time, you can safely draw them into the same syringe right before injecting, but they must never live in the same storage vial
Braga CB, Santos IK, Palmeira P, Peria FM, Ribeiro SM, Martinez EZ, et al
The preservative extends microbial safety to 28 days, which aligns with the peptides chemical shelf life but the two are independent
Additionally, it is unsuitable for lipophilic antioxidants and exhibits significant pH- and temperature-dependence, requiring strict experimental control (Singleton et al., 1999
The injectables are authentic, and I see real results every time
Enriched with Glutathione Niacinamide and Centella Asiatica to increase skin elasticity while soothes irritated skin