Peptides in Skincare: How Small Molecules Achieve Big Results
Table of Contents
1 What are peptides?
2 How do peptides work in the skin?
3 Who are peptides suitable for?
4 What types of peptides are there?
5 What peptides can and cannot do
6 The hero peptides in VENYA Skincare
7 Sources
1 What exactly are peptides?
Peptides are short chains of amino acids, which are the basic building blocks of all proteins. Two to about fifty amino acids linked by so-called peptide bonds form a peptide. What distinguishes them from complete proteins like collagen or elastin is solely their length: peptides are smaller, lighter, and thus penetrate the skin significantly more effectively.
In the skin, peptides naturally occur as signaling molecules that control repair processes, stimulate collagen synthesis, or regulate inflammatory reactions. However, with increasing age, the body's own production of these signaling peptides decreases. At the same time, cell renewal slows down, and the skin loses density and elasticity.
Topically applied peptides in skincare mimic these signaling pathways or stimulate them anew. They are considered one of the most evidence-based active ingredient classes in modern dermatology.
2 How do peptides work in the skin?
The mechanism of action of peptides varies depending on the type but always follows the same basic principle: They communicate with skin cells and trigger specific biological reactions there.
In simplified terms, three main mechanisms can be distinguished:
Signaling Peptides
They activate fibroblasts – the cells that produce collagen, elastin, and hyaluronic acid. By stimulating these cells to increase production, they counteract the thinning of the dermis, smooth wrinkles, and improve skin elasticity.
Neurotransmitter-inhibiting Peptides
These peptides dampen the release of acetylcholine at the muscle synapse. This reduces the contraction of facial muscles – similar to botulinum toxin, but without injection and with significantly less intensity. The result: expression lines are visibly reduced.
Carrier Peptides
They bind trace elements like copper or manganese and transport them specifically into deeper skin layers, where they act as cofactors for enzymatic processes – including collagen synthesis and wound healing.
3 Who are peptides suitable for?
The good news: Peptides are suitable for almost every skin type.
They are considered exceptionally well-tolerated, non-irritating, and can be used long-term.
Particular benefits for:
– Mature skin from 30+, where the body's own collagen production decreases
– Skin with visible wrinkles, loss of volume, or lack of firmness
– Sensitive skin that does not tolerate strong active ingredients like retinoids well
– Skin suffering from moisture loss, dull texture, or uneven pigmentation
Peptides can be well combined with other active ingredients, e.g., hyaluronic acid, ceramides, and antioxidants ideally complement their effect. Only with highly concentrated acids (AHAs/BHAs) should they be applied at separate times, as a low pH value can destabilize the peptide structure (these acids are not found in VENYA Skincare.)
4 What types of peptides are there?
Cosmetic research has developed and clinically investigated a variety of peptides over the last two decades.
An overview of the most important categories:
Signaling Peptides
Stimulate fibroblasts for collagen and elastin synthesis.
Examples: Palmitoyl Tripeptide-38, Palmitoyl Pentapeptide-4 (Matrixyl).
Neuropeptides / Neuromodulatory Peptides
Inhibit muscle contractions at the neuromuscular synapse.
Example: Acetyl Hexapeptide-8 (Argireline), Dipeptide Diaminobutyroyl Benzylamide Diacetate (Leuphasyl).
Aquaporin-Booster Peptides
Activate the skin's own water channels (aquaporins) and thus improve moisture supply from within.
Example: Acetyl Hexapeptide-37.
Exfoliating / Cell Renewal Stimulating Peptides
Accelerate the natural cell cycle and ensure a fresher, more even skin appearance.
Example: Hexanoyl Dipeptide-3 Norleucine Acetate (Perfection Peptide P3).
Vascular-Active Peptides
Improve microcirculation and counteract dark circles and puffiness.
Example: Acetyl Tetrapeptide-5.
5 What peptides can – and cannot – do
Peptides are effective but not a panacea. For a realistic expectation, it is important to know their possibilities and limitations.
What peptides can do
- Visible smoothing of fine lines and expression wrinkles with consistent use
- Improvement of skin elasticity and firmness over weeks and months
- More intense hydration by activating aquaporins
- Support for the skin barrier and regeneration
- Reduction of dark circles and puffiness
- Very good tolerability, even for sensitive skin
What peptides cannot do
- No immediate, dramatic results like invasive treatments
- No complete elimination of deep wrinkles without complementary measures
- No sun protection effect (SPF is always additionally necessary)
- No effect with incorrect formulation or too low concentration
Crucial for the effectiveness of peptides is the formulation: They must be stably incorporated, present in sufficient concentration, and formulated in a pH-optimized environment.
This is precisely the difference between mass-market products and evidence-based skincare.
6 The Hero Peptides in VENYA Skincare
VENYA consistently relies on clinically studied peptides that are specifically tailored to the needs of more mature skin.
All VENYA products are set to the physiological pH value of 4.9.
This is the basis for active ingredients like peptides to fully unleash their effect.
Too high or too low a pH value destabilizes peptide structures and nullifies their effect.
Below, we present the five hero peptides that make the difference in the VENYA range:
Palmitoyl Tripeptide-38 – the collagen booster
Type: Signaling Peptide
Palmitoyl Tripeptide-38 (also known under the trade name MATRIXYL® synthe'6) is one of the most well-documented anti-aging peptides in modern cosmetology. It simultaneously stimulates six components of the extracellular matrix: collagen I, III, and IV, laminin, fibronectin, and hyaluronic acid.
The result is not a short-term filler effect, but a real structural improvement of the dermis: the skin becomes denser, wrinkles are plumped from within, and the surface appears smoother and firmer.
Clinical studies show a significant reduction in deep and fine wrinkles after 8 weeks of daily use.
Contained in:
Healthy Aging Multi-Functional Serum · Healthy Aging Eye Cream · Healthy Aging Cream · Healthy Aging Cream Rich
Acetyl Hexapeptide-8 (Argireline) – the wrinkle relaxer
Type: Neuromodulatory Peptide
Acetyl Hexapeptide-8 is a synthetic hexapeptide that inhibits the release of neurotransmitters at the neuromuscular synapse.
It competes there with the SNARE protein complex, which is responsible for muscle contraction – thereby specifically dampening the activity of mimic muscles.
The effect: expression lines, especially on the forehead and around the eyes, are visibly reduced.
Argireline is well-documented in the scientific literature and is considered one of the few topically effective neuromodulatory peptides – without the risks of botulinum toxin injection.
Contained in:
Healthy Aging Multi-Functional Serum
Acetyl Hexapeptide-37 – the Aquaporin Activator
Type: Aquaporin Booster Peptide
Aquaporins are protein complexes that function as water channels in cell membranes. Acetyl Hexapeptide-37 specifically activates Aquaporin-3, the water channel most highly expressed in keratinocytes.
The result: the skin is hydrated from within and not just superficially moisturized.
This peptide addresses a mechanism that is increasingly weakened by aging, UV exposure, and external stressors. The reactivation of aquaporin activity leads to a persistently improved hydration status, noticeably firmer skin, and reduced transepidermal water loss (TEWL).
Contained in:
Healthy Aging Multi-Functional Serum
Acetyl Tetrapeptide-5 – the Eye Specialist
Type: Vascular/Lymph-activating Peptide
The skin around the eyes is the thinnest and most sensitive on the entire face. Acetyl Tetrapeptide-5 specifically acts on the microstructure of this area: it promotes lymph circulation, reduces fluid retention, and thereby visibly diminishes puffiness and dark circles under the eyes.
At the same time, it supports the skin's natural repair processes and improves the elasticity of the delicate eye area.
In combination with other active ingredients such as ceramides and saccharide isomerate, as in the VENYA Eye Cream, a synergistic effect is created that significantly strengthens the regenerative capacity of the eye area.
Contained in:
Hexanoyl Dipeptide-3 Norleucine Acetate (Perfection Peptide P3) – the Cell Renewal Accelerator
Type: Exfoliating / Cell Renewal Stimulating Peptide
Perfection Peptide P3 stimulates the biochemical processes responsible for the controlled detachment of dead skin cells.
As a result, the natural cell cycle is accelerated: keratinized cells are shed earlier, and new, vital cells reach the surface faster.
This leads to a visibly more even, radiant complexion without the mechanical irritation of conventional peels.
Particularly valuable for skin prone to thickening or uneven texture.
Contained in:
Conclusion
Peptides are well-researched signaling molecules with proven efficacy. For those who want to address skin aging with an evidence-based approach, without resorting to aggressive ingredients or invasive procedures, they are one of the most compelling options in modern skincare.
VENYA has made this class of active ingredients a central focus of its formulations from the outset. Combined with the physiological pH of 4.9 and lipid lamellar technology, which ensures optimal penetration.
The result is skincare that not only promises but, above all, delivers.
7 Sources
The following scientific publications and specialized databases formed the basis for this article:
1. Gorouhi, F. & Maibach, H.I. (2009). Role of topical peptides in preventing or treating aged skin. International Journal of Cosmetic Science, 31(5), 327–345.
2. Schagen, S.K. (2017). Topical Peptide Treatments with Effective Anti-Aging Results. Cosmetics, 4(2), 16.
3. Katayama, K., Armendariz-Borunda, J., Raghow, R., Kang, A.H. & Seyer, J.M. (1993). A pentapeptide from type I procollagen promotes extracellular matrix production. Journal of Biological Chemistry, 268(14), 9941–9944.
4. Ratz-Lyko, A. & Arct, J. (2021). Probiotics in cosmetic and dermatological products — tendency in recent years. European Journal of Dermatology, 31(3), 316–33.
5. Lintner, K. & Peschard, O. (2000). Biologically active peptides: From a laboratory bench curiosity to a functional skin care product. International Journal of Cosmetic Science, 22(3), 207–218.
6. Pickart, L. & Margolina, A. (2018). Regenerative and Protective Actions of the GHK-Cu Peptide in the Light of the New Gene Data. International Journal of Molecular Sciences, 19(7), 1987.
7. Pai, V.V., Shukla, P. & Kikkeri, N.N. (2017). Antioxidants in dermatology. Indian Dermatology Online Journal, 5(2), 210–214.
8. Ganceviciene, R., Liakou, A.I., Theodoridis, A., Makrantonaki, E. & Zouboulis, C.C. (2012). Skin anti-aging strategies. Dermato-Endocrinology, 4(3), 308–319.
9. Draelos, Z.D. (2009). The cosmeceutical realm. Clinics in Dermatology, 27(5), 473–480.
10. Baumann, L. (2007). Skin ageing and its treatment. Journal of Pathology, 211(2), 241–251.
11. INCI-Dokumentation VENYA Healthy Aging Produktlinie (interne Quelle, Philosophy Brands GmbH).