GHK-Cu is a small copper-binding tripeptide (340 Daltons) discovered by Loren Pickart in 1973
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Parry-Strong et al., 2016
The critical distinction is that legitimate bulk discounts are modest, perhaps 10% to 25%, while suspicious discounts are dramatic, 50% or more below market rates
Avoid or limit: White bread, white rice, pasta Pastries and baked goods Sugary cereals Sodas and sweetened beverages Candy and desserts Reducing these foods can significantly decrease acne flare-ups
But without stability data, there is also no way to quantify exactly how much potency has been lost