ZLEY®UP – Undecylenoyl Phenylalanine (CAS 175357-18-3):
L“”esperto di smaltimento puntuale”

ZLEY®UP (INCI: Undecylenoyl Phenylalanine), also known as Sepiwhite, is a premium skin-brightening agent used in high‑end brightening and spot‑correcting products such as SK-II and OLAY.
As a structural analog of α-melanocyte-stimulating hormone (α-MSH), Undecylenoyl Phenylalanine competitively binds to MC1-R receptors on melanocytes, effectively blocking the cAMP/PKA signaling pathway. This action reduces the expression of key melanogenic enzymes and directly inhibits tyrosinase activity, thereby significantly decreasing melanin production for visible brightening and spot-fading results.
ZLEY® is a professional supplier of Undecylenoyl Phenylalanine (CAS 175357-18-3), providing stable quality, technical support, and global delivery covering over 60 countries.
ZLEY®UP Product Information
| Parametro | Specifiche |
| Nome INCI | Undecilenil fenilalanina |
| Numero CAS | 175357-18-3 |
| Aspetto | White to off-white powder, characteristic odor |
| Uso consigliato | 0.1 – 2.0% |
| Solubilità | Liposolubile |
| Elaborazione | Add directly to the oil phase with heating to dissolve |
| Key Benefit | Brightening & spot correction |
| Meccanismo | α-MSH antagonist; competitively binds to MC1-R; inhibits cAMP/PKA melanogenic signaling pathway |
Is ZLEY®UP Safe?
Yes. ZLEY®UP is considered safe for cosmetic use under normal, reasonable, and foreseeable conditions at concentrations fino a 2,01 TP3T in both leave-on and rinse-off products (for rinse-off, the same limit applies by referencing leave-on usage data).
Applicazioni del prodotto
In cosmetics and skincare, ZLEY®UP functions primarily as a agente emolliente. Its lipid-amino acid structure provides excellent skin affinity, making it suitable for sensitive skin in brightening, spot-correcting, and antioxidant formulations, as well as compound liposome development. It has become a benchmark ingredient in efficacy-driven skincare. By combining it with niacinamide, adenosine, and other actives, formulators can build full-pathway brightening systems that deliver both safety and high performance, continuously empowering brands.
Why Source ZLEY®UP from ZLEY®?
Con oltre 20 anni di esperienza nel settore, ZLEY® si è trasformata in un'azienda moderna che integra ricerca e sviluppo, produzione, controllo qualità e vendite. Ci impegniamo a fornire materie prime per la cura della persona, semilavorati e soluzioni di formulazione personalizzate della massima qualità, per soddisfare le diverse esigenze dei clienti. La nostra rete di distribuzione globale garantisce un servizio affidabile ai clienti in oltre 60 paesi.
E-mail: [email protected]
Che tipo di assistenza tecnica puoi aspettarti?
In qualità di fornitore specializzato, ZLEY® offre un valore che va oltre il prodotto stesso:
- Supporto alla formulazione: Raccomandazioni di base sulla formulazione, suggerimenti sulle combinazioni e indicazioni sulla lavorazione
- Consulenza normativa: Assistenza nell'interpretazione dei requisiti di conformità per i mercati di riferimento
- Garanzia di qualità: Qualità costante dei prodotti, prezzi competitivi e logistica globale affidabile
- Informazioni di mercato: Ultime tendenze di mercato e approfondimenti sull'utilizzo degli ingredienti
Domande frequenti (FAQ)
Q1: How does ZLEY®UP work for brightening and spot correction?
A: ZLEY®UP is a structural analog of α-MSH. It competitively binds to MC1-R receptors on melanocytes, blocking the cAMP/PKA signaling pathway and reducing the production of melanogenic enzymes. It also directly inhibits tyrosinase activity, providing a dual-action approach to reducing melanin and fading dark spots.
Q2: Is ZLEY®UP suitable for sensitive skin?
A: Yes. Its lipid-amino acid structure gives it excellent skin affinity and mildness, making it highly suitable for sensitive skin formulations.
Domanda 3: Qual è il livello di utilizzo consigliato?
A: The recommended usage range is 0.1%–2.0%. Safety assessments confirm it is safe up to 2.0% in leave-on products.
Q4: Can ZLEY®UP be combined with other brightening ingredients?
A: Yes. It shows strong synergy with niacinamide, adenosine, phenylethyl resorcinol, tranexamic acid, and other brightening actives to build comprehensive, full-pathway brightening systems.
