Palmitoyl Tripeptide-1

There are several different types of peptides, which are categorized based on the signal they send to skin cells:

- Signal peptides: stimulate the production of proteins essential for the skin, such as collagen, elastin, proteoglycans, glycosaminoglycans, and fibronectin. Examples include Palmitoyl Tripeptide-5 and Palmitoyl Tripeptide-38.
- Metal ion and nutrient carrier peptides: facilitate the transport of trace elements or key nutrients (such as copper or biotin) that are essential for repair and regenerative processes. Examples include GHK-Cu, which transports copper to support cellular regeneration and improve skin firmness and radiance; and Biotinoyl Tripeptide-1, which delivers biotin directly to hair follicles, boosting the strength and density of hair and eyelashes. This peptide is particularly popular in products formulated to strengthen fragile eyelashes, eyebrows, and hair.
- Enzyme-inhibiting peptides: directly or indirectly block enzymes that break down essential skin proteins. Key examples include Acetyl Tetrapeptide-5, and peptides/amino acids derived from rice, soy, or silk.
- Neurotransmitter-inhibiting peptides: inhibit the release of acetylcholine at the neuromuscular junction, producing a botox-like effect. An example is Tripeptide-3, which is used as a potent anti-wrinkle active ingredient.