Peptides in professional cosmetics. Do they work and how to choose them?
April 8, 2026 | Author: Patrycja Gerasik-Marciniak
From this article you will learn:
what are peptides and what mechanisms of action they show in professional cosmetics,
what determines the effectiveness of peptides and why their action requires time and proper use,
how to choose different groups of peptides for the needs of the skin and therapeutic purposes.
For several years, peptides have been one of the key trends in professional cosmetology and home care cosmetics. Their growing popularity is due to both well-known mechanisms of action at the cellular level and real effects observed in anti-aging, regenerative and supporting problematic skin therapies. In cosmetology practice, however, the question arises: do all peptides work similarly and how to consciously choose them to the needs of the skin?
Peptides are short chains of amino acids connected by peptide bonds. Depending on the length and sequence, they can exhibit a variety of biological properties. In cosmetology, their ability to modulate cellular processes is primarily used, from stimulation of fibroblasts to regulation of neuromuscular mealar. Unlike large proteins, peptides are characterized by a lower molecular weight, which makes it easier for them to penetrate the stratum corneum of the epidermis, especially when they are properly prepared, e.g. in carrier systems.
The effectiveness of peptides is due to their ability to mimic the natural processes occurring in the skin. There are several main mechanisms of action, one of which is the stimulation of collagen and elastin synthesis. Signal peptides (e.g. matrikin) show this ability, they send signals to fibroblasts, initiating the production of extracellular matrix components. The result is an improvement in skin firmness and elasticity. Another effect is the so-called "botox-like", which applies to some peptides (e.g. Hexapeptides), which affect neuromuscular transmitation, limiting mimic muscle contractions. As a result, dynamic wrinkles are shallowed. Some peptides also have the ability to transport active ingredients (e.g. with copper ions), facilitate the delivery of microelements necessary for regenerative and healing processes. There are also peptides that exhibit anti-inflammatory, regenerating and immunomodulatory properties, supporting the treatment of sensitive, acne-prone skin or post-invasive procedures.
The effectiveness of peptides depends on several key factors, including the concentration of the active substance, the presence of transport systems, the regularity of use, and finally the adaptation to the skin problem. It is worth noting that peptides do not work immediately, their effects are the result of long-term modulation of biological processes. In office therapy, the best results are observed when combining professional treatments with appropriate home care.
Signal peptides
Four groups of peptides are most often used in cosmetic procedures. The first group consists of signal peptides, most often used in anti-aging therapies. They stimulate the synthesis of collagen, elastin and hyaluronic acid. They are recommended for mature, flabby skin and with signs of photoaging.
Neuromodulatory peptides
The second group consists of neuromodulating peptides, which are used in anti-wrinkle therapies aimed at mimic wrinkles. They are an alternative or complement to aesthetic medicine procedures.
Transporting peptides
The group is transporting peptides that support skin regeneration, especially in therapies after treatments with chemical peels or laser therapy. They improve healing and reduce inflammation.
Enzyme peptides
The last group are enzymatic peptides (enzyme inhibitors), which have the ability to inhibit the activity of enzymes responsible for collagen degradation or the melanogenesis process, thanks to which they are used in depigmentation and anti-aging therapies. It should be remembered that the selection of peptides should be based on cosmetological diagnosis and therapeutic purpose. It is crucial not only to determine the type of skin, but above all to identify the dominant problem.
Peptides are widely used in treatments such as microneedle and needleless mesotherapy, sonophoresis and iontophoresis, they are also used in post-treatment masks and creams. Their use allows you to intensify the effects of the therapy and shorten the time of skin regeneration. This is especially important in the case of invasive procedures, where the skin requires rapid reconstruction.
Despite numerous advantages, peptides are not universal ingredients, the limitation is the high price of raw materials, sensitivity to degradation, the need for precise formulation, and the lack of immediate effects. In addition, the cosmetics market abounds in products containing trace amounts of peptides, which can lead to a misjudgment of their effectiveness by customers.
Peptides are one of the most promising tools of modern professional cosmetology. Their effectiveness is confirmed by both research and practice, but it requires a conscious approach to the cosmetic recipe and selection to the needs of the skin. For cosmetologists, it is crucial to understand the mechanisms of action of individual peptide groups and the ability to combine them with other active ingredients and treatment procedures. Only then is it possible to achieve optimal and long-term therapeutic effects.