is nac glutathione N-A-C (N-Acetyl-L-Cysteine), 500mg 60 Veggie Caps N-Acetyl Cysteine (NAC) - 1MD

And it allows precise dosing

Physical enhancement methods including iontophoresis, microneedling, and ultrasound also significantly increase GHK-Cu delivery, with microneedling pre-treatment increasing peptide penetration by approximately 10-fold compared to intact skin application, effects similar to those achieved with other topical peptide formulations optimized for transdermal delivery

Packaged to prevent breakage during transit

Antioxidant and anti-inflammatory effect GHK-Cu acts as a scavenger of free radicals : Captures hydroxyl radicals (OH) Inhibits lipid peroxidation Stimulates endogenous antioxidant defense (SOD, glutathione peroxidase) In the anti-inflammatory area it modulates NF-B signaling , the key transcription factor of the inflammatory response

The adjustable-depth pens marketed for home use are a yellow flag, and the reason isn't subtle: depth control is harder than it looks with bare hands