Cosmetic Peptides for advanced skincare science
SB-Peptide synthesises custom cosmetic peptides for formulators, cosmeceutic brands and research labs, with rigorous analytical control, flexible quantities and French manufacturing expertise.
10 days
≥95%
Made in France
In-house production
Peptide Libraries
The science
What are cosmetic peptides?
Peptides are short chains of amino acids, the same building blocks that form proteins. In skin biology, specific peptide sequences act as molecular messengers, signalling cells to produce collagen, elastin, hyaluronic acid and other structural proteins that keep skin firm, hydrated and resilient.
Unlike large proteins, cosmetic peptides are small enough to penetrate the stratum corneum and interact directly with dermal fibroblasts, keratinocytes and other skin cells. This size advantage, combined with their sequence-specific activity, makes them among the most effective and targeted active ingredients in modern cosmeceutics.
Most cosmetic peptides used today are synthetically produced, a process that ensures batch-to-batch consistency, defined purity and freedom from biological contaminants. SB-Peptide synthesises these molecules using solid-phase peptide synthesis (SPPS), the gold standard for precision and scalability.
Peptide structure — example: Matrixyl (Palmitoyl Tripeptide-1)
Pal-Gly-His-Lys
HOW PEPTIDES WORK IN SKIN
Application
Peptide is applied in serum or cream formulation to the skin surface
Penetration
Small molecular weight allows passage through the stratum corneum
Signal binding
Sequence-specific recognition by fibroblast or keratinocyte receptors
Cellular response
Upregulation of collagen, elastin or hyaluronic acid gene expression
Visible result
Firmer, smoother, more hydrated skin with measurable improvement
Why cosmetic peptides
The case for peptide-based actives
Sequence-specific activity
Each peptide sequence targets a distinct biological pathway. Unlike broad-spectrum actives, peptides act with precision, stimulating collagen without triggering off-target responses.
Stable and formulation-ready
Synthetic peptides offer defined purity and batch-to-batch reproducibility. Most are water-soluble and compatible with a wide range of cosmetic formulation systems.
High skin compatibility
Structurally analogous to the skin's own endogenous peptides, synthetic cosmetic peptides are exceptionally well-tolerated, with a very low irritation and sensitisation potential.
Cosmetic regulatory pathway
Cosmetic peptides fall under cosmetic ingredient regulations (e.g. EU Cosmetics Regulation, MoCRA in the USA), a well-defined and navigable regulatory framework for brands.
Biological effects
What cosmetic peptides do to skin
Collagen stimulation
Signal peptides activate TGF-β pathways in fibroblasts, upregulating pro-collagen I and III synthesis for long-term firmness.
Barrier & hydration
Promote ceramide and filaggrin production in keratinocytes, reinforcing the skin barrier and significantly reducing TEWL.
Muscle relaxation
Neuropeptides inhibit acetylcholine release at the neuromuscular junction, softening expression lines without injectables.
Matrix protection
Enzyme-inhibiting peptides block MMP activity that degrades collagen and elastin, preserving structural integrity of the dermis.
Wound healing & repair
Copper-binding peptides accelerate skin regeneration and have demonstrated anti-inflammatory activity in clinical studies.
Tone uniformity
Select oligopeptides inhibit tyrosinase and MITF expression, reducing melanin overproduction and correcting hyperpigmentation.
Peptide families
Four categories of cosmetic peptides
Signal peptides
Collagen & matrix stimulators
Act as matrikines, fragments derived from ECM proteins that signal fibroblasts to produce collagen, elastin and fibronectin. Typically tripeptides or pentapeptides, often with a palmitoyl modification to enhance dermal penetration.
Neuropeptides
Expression-line relaxers
Compete with SNAP-25 at SNARE protein complexes, inhibiting vesicular acetylcholine release. This reduces repetitive muscle micro-contractions responsible for dynamic wrinkles, a non-injectable alternative to botulinum toxin.
Carrier peptides
Mineral delivery systems
Form stable complexes with trace minerals, particularly copper and manganese, and escort them into the dermis where they act as enzyme cofactors for collagen cross-linking and antioxidant defence.
Enzyme-inhibiting peptides
ECM protectors
Specifically inhibit matrix metalloproteinases (MMPs) and serine proteases that degrade structural proteins. Preserving the extracellular matrix slows photoaging, sagging and loss of skin density associated with UV exposure and chronological aging.
Applications
Where cosmetic peptides are used
Skin care
- Anti-aging & firming serums
- Eye contour treatments
- Neck & décolleté creams
- Brightening & depigmenting
- Post-procedure recovery
Hair & scalp
- Scalp stimulation treatments
- Hair shaft repair serums
- Keratin-boosting conditioners
- Anti-thinning formulations
Body & sun care
- Firming body treatments
- Stretch mark correction
- After-sun repair formulas
- Pollution-defence actives
Cosmeceutics & R&D
- In-vitro efficacy studies
- New ingredient discovery
- Reference standards
- Proprietary OEM peptides
What we offer at SB Peptide
Our cosmetic peptide services
From initial research quantities to full commercial-scale production, SB-Peptide covers every stage of cosmetic peptide development with the same level of analytical precision and scientific expertise. Our French synthesis facility combines academic-grade analytical rigour with the flexibility and responsiveness that cosmetic brands and R&D teams need.
Custom peptide synthesis
Submit any cosmetic peptide sequence and receive a fully synthesised, analytically verified active ingredient. Using solid-phase peptide synthesis (SPPS), SB-Peptide guarantees high sequence fidelity and batch reproducibility. Standard lead time is 3-4 weeks, with an express 10-day option available for urgent projects.
Chemical modifications
Chemical modifications are available to optimise your peptide's skin penetration, stability and bioactivity. The most requested for cosmetic applications include palmitoylation (C16 fatty acid), myristoylation, PEGylation, head-to-tail cyclisation, disulfide and lactam bridges, and N/C-terminal capping. All modifications are confirmed by HPLC and mass spectrometry.
Peptide libraries for screening
R&D and formulation teams can commission cosmetic peptide screening libraries in 96-well plate format, starting from 2–5 µmol per peptide. Each well is individually characterised and supplied with full analytical data. Ideal for structure-activity relationship (SAR) studies, high-throughput efficacy screening, or building a proprietary cosmetic ingredient library from scratch.
TFA-free cosmetic
Trifluoroacetic acid (TFA) is an unavoidable counter-ion in standard SPPS but can cause irritation in cosmetic formulations at higher concentrations. SB-Peptide offers a complete TFA removal and counter-ion exchange service, replacing TFA with acetate or chloride salts that are fully compliant with dermocosmetic use. Recommended as standard for any cosmetic application.
Reverse-phase purity determination on every batch as standard
Mass spectrometry
ESI-MS or MALDI-TOF identity confirmation included
Full CoA with sequence, MW, purity and storage data
Counter-ion removal available for cosmetic-grade supply
Cosmetic Peptides - Custom support & Price inquiry
Address
Reach out to us for a personalized quote or to learn more about our Cosmetic products and services. Visit us at 3b Rue de l'Isère
38120 Saint Egrève, FRANCE
Phone
+33 (0) 4 76 45 21 20
