Both options exist in the Australian market. Stock-base programmes offer a pre-formulated peptide serum chassis (e.g. Matrixyl or Argireline base) where you choose fragrance, pH adjustment, and packaging. Semi-custom and bespoke programmes allow you to specify active concentrations, novel peptide combinations, and delivery systems such as liposomal encapsulation. AJ Cosmo Labs connects you to manufacturers offering both tiers.
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