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Peptides in Skincare: What They Are and Why You Need Them
Deborah Nicolo• October 5, 2024• 5 min read

Peptides are one of the most exciting ingredients in modern skincare. These small proteins act as messengers, telling your skin to produce more collagen and repair itself.
How Peptides Work
Peptides are short chains of amino acids that penetrate the skin and signal cells to perform specific functions. Different peptides have different effects:
- Signal Peptides: Tell skin to make more collagen
- Carrier Peptides: Deliver trace minerals to skin
- Neurotransmitter Peptides: Relax muscles (like Botox-lite)
- Enzyme Inhibitor Peptides: Slow collagen breakdown
Key Peptides to Know
- Matrixyl (Palmitoyl Pentapeptide-4): Stimulates collagen synthesis
- Argireline: Reduces appearance of expression lines
- Copper Peptides: Promote healing and collagen production
Using Peptides Effectively
Peptides work well with most other ingredients and are generally non-irritating. Apply after water-based serums and before heavier creams. Consistency is key—use daily for best results.
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Deborah Nicolo
Founder & Lead Aesthetician at Glam Squad Aesthetics

