Ingredient or product comparison
Which peptides for better skin research work topically vs require injection?
Small peptides (GHK-Cu at ~340 Da, Matrixyl at ~578 Da) can work topically due to their molecular weight being near or below the 500 Da dermal penetration threshold. Larger peptides (BPC-157, TB-500) require subcutaneous injection for meaningful tissue deliver
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- Small peptides (GHK-Cu at ~340 Da, Matrixyl at ~578 Da) can work topically due to their molecular weight being near or below the 500 Da dermal penetration threshold. Larger peptides (BPC-157, TB-500) require subcutaneous injection for meaningful tissue delivery. Multi-peptide blends like GLOW and KLOW are designed for injectable research protocols.