Tripeptide-16 è un composto chimico, un peptide sintetico e una molecola composta da tre aminoacidi collegati insieme: glutammina, glicina, prolina. 

I peptidi sintetici possono essere generati come copie di frammenti proteici incorporando amminoacidi non proteinogenici e modificati in modo da aumentare anche la stabilità proteolitica delle molecole.

A cosa serve e dove si usa

Tripeptide-16 è un ingrediente attivo utilizzato nelle formulazioni cosmetiche per i suoi effetti benefici sulla protezione e il rafforzamento della pelle. È noto per stimolare le funzioni di difesa della pelle, aiutando a combattere gli stress ambientali come l'inquinamento e i raggi UV. Questo peptide favorisce la rigenerazione cellulare e la riparazione dei danni alla pelle, contribuendo a migliorare l'elasticità e la compattezza. Il Tripeptide-16 è comunemente impiegato in sieri e creme per la pelle, particolarmente in prodotti anti-invecchiamento e protettivi, per offrire una barriera migliorata contro gli agenti esterni e promuovere una pelle più sana e resistente.

Cosmetica - Funzioni INCI

• Agente condizionante della pelle.  Rappresenta il perno del trattamento topico della pelle in quanto ha la funzione di ripristinare, aumentare o migliorare la tolleranza cutanea a fattori esterni, compresa la tolleranza dei melanociti. La funzione più importante dell'agente condizionante è  prevenire la disidratazione della pelle, ma il tema è piuttosto complesso e coinvolge emollienti ed umettanti che possono essere aggiunti nella formulazione.

Medicina

Tripeptidi e dipeptidi si sono rivelati utili in applicazioni biomediche (1) e per pelli sensibili (2).

Bibliografia_____________________________________________________________________

(1) Santos S, Torcato I, Castanho MA. Biomedical applications of dipeptides and tripeptides. Biopolymers. 2012;98(4):288-93. doi: 10.1002/bip.22067. PMID: 23193593.

Abstract. Peptides regulate many physiological processes, acting at some sites as endocrine or paracrine signals and at others as neurotransmitters or growth factors, for instance. These molecules represent a major evolution in medical and industrial fields, as it is becoming mandatory to design and exploit molecules that do not necessarily fit the description of classical drug classes. The list of peptides with potential biomedical applications is huge and is growing each year. These biomedical applications range from uses as drugs to flavor-active peptides as ingredients in natural health products, nutraceuticals and functional foods. Among the peptide family, dipeptides and tripeptides are very appealing for drug discovery and development because of their cost-effectiveness, possibility of oral administration, and simplicity to perform molecular structural and quantitative structure-activity studies. Our objective is to review different actual and future uses of dipeptides and tripeptides as well as the major advances and obstacles in this growing area.

(2) Resende DISP, Ferreira MS, Sousa-Lobo JM, Sousa E, Almeida IF. Usage of Synthetic Peptides in Cosmetics for Sensitive Skin. Pharmaceuticals (Basel). 2021 Jul 21;14(8):702. doi: 10.3390/ph14080702. 

 Abstract. Sensitive skin is characterized by symptoms of discomfort when exposed to environmental factors. Peptides are used in cosmetics for sensitive skin and stand out as active ingredients for their ability to interact with skin cells by multiple mechanisms, high potency at low dosage and the ability to penetrate the stratum corneum. This study aimed to analyze the composition of 88 facial cosmetics for sensitive skin from multinational brands regarding usage of peptides, reviewing their synthetic pathways and the scientific evidence that supports their efficacy. Peptides were found in 17% of the products analyzed, namely: acetyl dipeptide-1 cetyl ester, palmitoyl tripeptide-8, acetyl tetrapeptide-15, palmitoyl tripeptide-5, acetyl hexapeptide-49, palmitoyl tetrapeptide-7 and palmitoyl oligopeptide. Three out of seven peptides have a neurotransmitter-inhibiting mechanism of action, while another three are signal peptides. Only five peptides present evidence supporting their use in sensitive skin, with only one clinical study including volunteers having this condition. Noteworthy, the available data is mostly found in patents and supplier brochures, and not in randomized placebo-controlled studies. Peptides are useful active ingredients in cosmetics for sensitive skin. Knowing their efficacy and synthetic pathways provides meaningful insight for the development of new and more effective ingredients.