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Vitamin B12 deficiency can lead to brittle nails, changes in nail texture, and slow nail growth

Skin Type: Oily skin generally tolerates topical GHK-Cu well

Tham R, Nystrom L, Holmstedt B: Identification by mass spectrometry of pyroglutamic acid as a peak in the gas chromatography of human urine

During the application period, the peptide stimulates gene expression related to collagen production, elastin synthesis, and growth factor secretion, creating a regenerative environment within hair follicles

For individuals, following a plant-based diet, fortified plant-based milk, and nutritional yeast can help bridge the gap