Peptides are short chains of amino acids that serve as building blocks for proteins such as collagen, elastin, and keratin—the structures that play a key role in the skin’s firmness and elasticity. In the world of molecules, a primary distinction is made between two groups: oligopeptides, which consist of only a few amino acids, and polypeptides, which are composed of significantly longer chains and are therefore much more complex

The reason peptides are so popular in skincare is their versatility: as a class of compounds, they perform various functions in the body, including acting as signaling or messenger molecules. Because peptides vary greatly in structure, there is no single “miracle peptide,” but rather many different types, each with its own unique properties. Their actual effect on the skin depends heavily on their specific structure and function. That’s why it’s crucial which peptides are used in a formulation and how they’re combined. Peptides can be linked to specific processes in the skin that are important for skin structure. These include mechanisms related to collagen and elastin: two proteins that play a key role in the skin’s firmness and elasticity. Think of it this way: As we age or our skin is stressed by external factors, the natural production of these proteins decreases. By applying peptides topically (i.e., from the outside), we signal the skin to stimulate the production of these natural proteins. Since peptides are also quite small molecules, they can more easily penetrate the upper layers of the skin and perform their function there.

Peptides are among the most exciting ingredients in modern skincare. However, their effectiveness depends heavily on how they are formulated and combined. As standalone ingredients, they are rarely sufficient to visibly improve the skin’s appearance. Only when combined with other active ingredients do they reach their full potential. That’s why at DR EMI ARPA SKIN, we combine peptides with ceramides and azelaic acid in the Barrier Boost CPA Barrier Cream to not only promote collagen synthesis but also support the skin barrier. In the Better Balm, ceramides, fermented camellia seed oil, 5% panthenol, shea butter, and a peptide within the polyglyceride base ensure that dry lips are hydrated, repaired, and protected. 

Specialized treatments like our Daily Depuff Total Eye Treatment also demonstrate that peptides are team players: Here, a special acetyl hexapeptide-8 works hand in hand with hyaluronic acid and ectoine to reduce puffiness while hydrating the sensitive eye area. For skin needs that require even more support, the Barrier Boost+ Rich Cream even uses a complex of three different peptides, embedded in a nourishing lipid structure. 

For those moments when your skin needs extra care, there’s Barrier Boost+ Rich Cream. A nourishing face cream that soothes sensitive skin in particular and forms a protective layer that strengthens the skin barrier and locks in moisture. Whether as a rich day cream in winter, a nourishing night treatment during stressful times, or year-round intensive facial care for dry and sensitive skin: the rich formula with ceramides, peptides, and ectoine strengthens the skin barrier, reduces feelings of tightness, and preserves skin moisture. The Rich Cream adapts to your skin’s needs.

As chains of amino acids, peptides are the essential building blocks of proteins such as collagen and elastin, which keep your skin firm and elastic. In skincare, they act as smart messenger molecules: As signaling molecules, they can prompt the skin to produce certain natural proteins, thereby stimulating collagen production, for example. Peptides therefore do not “work” like a traditional active ingredient, but rather indirectly through signaling processes in the skin. 

At DR EMI ARPA SKIN, we focus on effective combinations to ensure that the peptides in our skincare products can reach their full potential. In the Barrier Boost CPA, they are complemented by ceramides and azelaic acid, while the Daily Depuff Total Eye Treatment relies on the synergy between hyaluronic acid and ectoine. Finally, our spotlight product, the Barrier Boost+ Rich Cream, combines three peptides with ceramides and antioxidants like astaxanthin to provide comprehensive support for the skin barrier.