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Research Base Comparison GHK-Cu has the most extensive research base of any peptide in the Durham Peptides catalog over 100 published studies spanning five decades

Milk Thistle Milk thistle has long been used to support healthy liver function

View GHK-Cu (Copper Peptide) Frequently Asked Questions Which has stronger evidence

Formulated with LHA, a next-generation exfoliating ingredient, and glutathione, it not only removes makeup residue but also helps clear blackheads, whiteheads, and other impurities, revealing a brighter, clearer complexion

Side effects such as nausea or digestive discomfort can feel more noticeable during perimenopause and menopause because sleep disruption, hormonal fluctuations, and digestive changes can influence how the body tolerates dose increases