@draleksandrabrown: Peptides can be a great addition to your skincare routine in your 40s, but the key is knowing which ones you can actually layer together and which combinations are better separated. Here’s how I would layer each combination: Matrixyl + Argireline: These are two of the easier peptides to layer, and they can generally fit into either a morning or evening routine alongside many other skincare ingredients. Copper peptides + Vitamin C: This combination depends on the specific form of vitamin C and the copper peptide formula, so I wouldn’t automatically assume they belong in the same routine. Copper peptides + Retinoids: This can also depend on the specific copper peptide product, so check the formulation rather than blindly layering them together. Copper peptides + Acids: I would separate copper peptides from exfoliating acids like lactic acid and salicylic acid rather than layering them in the same routine. That’s why I put together a complete peptide layering guide and chart, along with a full YouTube video, so you can see exactly what goes together, what doesn’t, and when to use each one. Watch the full peptide layering guide on YouTube. Link in bio. Follow for more dermatologist-approved skincare and healthy aging tips. #Peptides  #PeptideLayering #CopperPeptides #Matrixyl #Argireline

Dr. Aleksandra Brown

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Region: PA

Wednesday 09 September 2026 22:00:00 GMT