does ghk cu help with keratosis pilaris Best Copper Peptide Serum GHK-Cu Copper Peptide Supplement, Anti-Aging

Visible results, such as reduced shedding and increased vellus hair (peach fuzz), may be noticeable within 2-3 months, but significant improvements in density and thickness often take 4-6 months of consistent daily application

The Hostynek and Maibach group at UCSF measured exactly this in 2011: human skin permeation of GHK-Cu as a function of skin layer, with the result that the peptide accumulates in the upper stratum corneum but does not pass through to viable epidermis or dermis in any meaningful quantity 4

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You can add it to a formula that contains oil using an emulsifier

Consider testing copper and zinc levels every 12 weeks, along with liver and kidney function tests