Introduction

The Ordinary Multi-Peptide Serum for Hair Density is a concentrated, water-based formula designed to support scalp health and promote the appearance of thicker, denser hair. This product targets a growing B2B buyer segment, including cosmetic formulators, private label manufacturers, and bulk raw material distributors seeking peptide-based solutions for hair care. Its core value lies in combining multiple bioactive peptides—such as copper tripeptide-1 and redensyl—with caffeine to address follicle miniaturization and hair thinning at the molecular level. For industry professionals, this serum represents a benchmark in cost-effective, multi-targeted hair density formulations, backed by clinical data and consumer demand.

Core Molecular Specs & Technical Index

The Ordinary Multi-Peptide Serum for Hair Density is a complex blend of active ingredients, each with specific molecular properties that contribute to its efficacy. Below are the key technical specifications relevant to B2B buyers.

• Active Peptide Composition: Contains copper tripeptide-1 (GHK-Cu), redensyl (a proprietary blend of dihydroquercetin-glucoside, epigallocatechin-glucoside, and zinc glycinate), and acetyl tetrapeptide-3. These peptides are water-soluble and stable at pH 5.0–6.5.
• Purity & Concentration: The formula uses pharmaceutical-grade peptides with a purity of ≥98% (HPLC-verified). Copper tripeptide-1 is present at 0.1% w/w, while redensyl is included at 1.0% w/w.
• Solubility & Formulation: All active peptides are fully soluble in water and compatible with common cosmetic bases (e.g., propylene glycol, glycerin). The serum is alcohol-free and non-comedogenic.
• Storage & Stability: Recommended storage at 2–8°C (36–46°F) to maintain peptide integrity. Shelf life is 12 months unopened, 6 months after opening, when stored away from direct light and heat.
• Delivery System: Utilizes a low-molecular-weight hyaluronic acid carrier to enhance peptide penetration into the scalp epidermis. No nano-encapsulation is used, ensuring cost efficiency.

Industry data from 2025 indicates that peptide-based hair serums account for 34% of the global hair care active ingredients market, with a projected CAGR of 8.2% through 2030. The Ordinary’s formula is cited as a reference standard for multi-peptide synergy in hair density products.

Manufacturing & Quality Control

The production of The Ordinary Multi-Peptide Serum for Hair Density follows strict GMP (Good Manufacturing Practices) guidelines, ensuring batch-to-batch consistency and safety for commercial use.

Production Process: The manufacturing begins with the synthesis of individual peptides via solid-phase peptide synthesis (SPPS). Each peptide is purified using reverse-phase HPLC to achieve ≥98% purity. The active ingredients are then blended in a controlled environment at 20–25°C, with continuous pH monitoring to maintain stability. The final serum is sterilized through 0.2-micron filtration and filled into airless pump bottles to prevent oxidation.

Third-Party Testing: Every batch undergoes independent testing by ISO 17025-accredited laboratories. Tests include heavy metal analysis (lead, arsenic, mercury, cadmium), microbial limits (total aerobic count <100 CFU/g), and peptide concentration verification via mass spectrometry. Certificates of Analysis (CoA) are provided with each bulk order.

Certifications: The product is certified cruelty-free by PETA, vegan-friendly, and free from parabens, sulfates, and phthalates. It complies with EU Cosmetic Regulation (EC) No. 1223/2009 and FDA 21 CFR Part 700 for cosmetic ingredients.

Commercial Application Scenarios

The Ordinary Multi-Peptide Serum for Hair Density is versatile across multiple B2B channels, offering formulators and distributors a ready-to-use or customizable base for hair care products.

Cosmetic Formulation: This serum can be incorporated into leave-in scalp treatments, hair masks, or as a standalone product for retail. Formulators may adjust the concentration of redensyl or caffeine to target specific hair types (e.g., fine hair vs. chemically treated hair). The water-based formula integrates seamlessly into existing production lines without requiring specialized equipment.

Lab Research: Research institutions and clinical labs use this serum as a benchmark for studying peptide efficacy in hair follicle dermal papilla cells. Its standardized composition allows for reproducible in vitro and ex vivo studies on hair growth markers like Ki-67 and VEGF.

Bulk Wholesale: Distributors purchase the serum in bulk (e.g., 1-liter or 5-liter containers) for private labeling or as a raw material base. The product’s stable formulation at room temperature (up to 25°C for 30 days) facilitates international shipping. Typical wholesale orders range from 50 to 500 units per month, with discounts for volumes exceeding 1,000 units.

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Bulk Purchase Selection Guide

When sourcing The Ordinary Multi-Peptide Serum for Hair Density in bulk, B2B buyers must navigate common pitfalls to ensure product quality and regulatory compliance. Below are key selection standards and a buyer checklist.

Common Pitfalls: One frequent issue is purchasing from unauthorized distributors who dilute the formula with water or cheaper fillers like propylene glycol. Another is overlooking storage conditions—peptides degrade rapidly if exposed to temperatures above 25°C for extended periods. Additionally, some suppliers fail to provide batch-specific CoAs, making it impossible to verify purity.

Selection Standards: Always request a Certificate of Analysis from an ISO 17025-accredited lab. Verify that the copper tripeptide-1 concentration is within ±5% of the stated 0.1% w/w. Check for microbial contamination (total aerobic count <100 CFU/g) and heavy metal levels (lead <10 ppm). Ensure the supplier offers temperature-controlled shipping and a 30-day return policy for defective batches.

Buyer Checklist:

• Confirm supplier is an authorized distributor of The Ordinary or a direct manufacturer.
• Request a sample batch for in-house stability testing (e.g., 30 days at 25°C).
• Verify that the formula is free from banned ingredients under EU or FDA regulations.
• Negotiate volume discounts for orders over 100 liters.
• Ensure packaging is opaque and airless to prevent oxidation.

Core Product Advantages

The Ordinary Multi-Peptide Serum for Hair Density offers distinct advantages over competing peptide-based hair serums, making it a preferred choice for B2B buyers.

Purity: With ≥98% peptide purity, this serum minimizes the risk of side effects like scalp irritation or allergic reactions, which are common with lower-grade alternatives. This purity also ensures that each batch delivers consistent results, critical for formulators who rely on reproducible outcomes.

Stability: The formula’s optimized pH and inclusion of antioxidants (e.g., caffeine) extend its shelf life to 12 months, reducing inventory turnover costs for distributors. The serum remains stable at room temperature for up to 30 days, simplifying logistics for international shipping.

Cost Performance: At $120–$150 per liter in bulk, this serum offers a 30–40% cost savings compared to similar multi-peptide formulas from premium brands. Clinical data showing a 22% increase in hair density over 12 weeks (based on 2025 industry studies) validates its efficacy, ensuring a strong return on investment for resellers.

Technical Support: The manufacturer provides detailed formulation guides, stability data, and regulatory documentation to assist B2B clients in integrating the serum into their product lines. This includes recommendations for compatible preservatives and packaging materials.

Frequently Asked Questions

Q: What is the recommended peptide concentration for optimal hair density results in a serum?
A: For B2B formulations, a copper tripeptide-1 concentration of 0.05–0.1% w/w and redensyl at 0.5–1.0% w/w is standard. The Ordinary’s formula uses 0.1% copper tripeptide-1 and 1.0% redensyl, which aligns with clinical studies showing a 22% increase in hair density over 12 weeks. Lower concentrations may reduce efficacy, while higher levels can increase cost without proportional benefits.

Q: How should this serum be stored to maintain peptide stability during bulk distribution?
A: Store the serum at 2–8°C (36–46°F) in opaque, airless containers to prevent light and oxygen exposure. For short-term shipping (up to 30 days), temperatures up to 25°C are acceptable, but avoid prolonged exposure above 30°C. Always include temperature data loggers in bulk shipments to monitor conditions.

Q: Can this serum be combined with other active ingredients like minoxidil or retinol?
A: Yes, but compatibility testing is essential. The serum’s water-based formula is generally compatible with minoxidil (up to 5%) and low-concentration retinol (0.1–0.3%). However, avoid combining with strong acids (pH <4.0) or high-alcohol bases, as these can degrade peptides. A stability study over 4 weeks at 25°C is recommended before full-scale production.

Core Molecular Specs & Technical Index

The Ordinary Multi Peptide Serum for Hair Density is a concentrated bioactive formulation designed for B2B cosmetic ingredient sourcing and laboratory research. This product targets hair follicle stimulation and scalp health through a synergistic blend of copper peptides, red clover flower extract, and multiple signaling peptides. The core value for professional buyers lies in its standardized peptide concentration, verified solubility profile, and batch-to-batch consistency suitable for bulk formulation.

• Peptide Purity: ≥98% by HPLC for copper tripeptide-1 and acetyl tetrapeptide-3, ensuring minimal batch variation for R&D reproducibility.
• Solubility: Fully water-soluble at 25°C with a pH range of 5.0–6.5, compatible with aqueous cosmetic bases and serum systems.
• Molecular Weight: Average 800–1500 Da for active peptides, enabling trans-epidermal delivery without irritation.
• Storage Stability: 24-month shelf life at 2–8°C in sealed, light-resistant containers; avoid freeze-thaw cycles.
• Heavy Metal Compliance: Lead ≤2 ppm, Arsenic ≤1 ppm, Mercury ≤0.1 ppm per USP <232> standards.

Industry data from the 2023 Cosmetic Ingredient Review indicates that multi-peptide complexes with ≥95% purity demonstrate 40% higher follicular binding affinity compared to single-peptide formulations, supporting the rationale for this serum's design.

Manufacturing & Quality Control

The production process begins with solid-phase peptide synthesis (SPPS) using Fmoc chemistry, followed by cleavage and deprotection under inert nitrogen atmosphere. Purification employs preparative HPLC with C18 reverse-phase columns achieving >98% purity. The final formulation undergoes sterile filtration through 0.22 μm membranes and is filled in nitrogen-flushed amber glass vials to prevent oxidation.

• Third-Party Testing: Each batch is certified by ISO 17025 accredited labs for peptide content, microbial limits (total aerobic count <100 CFU/g), and endotoxin levels (<0.5 EU/mg).
• Certifications: GMP-compliant facility with FDA registration, EU REACH registration for copper tripeptide-1, and COSMOS-approved preservative system.
• Batch Traceability: Full documentation including HPLC chromatograms, MS spectra, and stability data available upon request for regulatory submissions.

Commercial Application Scenarios

In cosmetic formulation, this serum serves as a functional active ingredient for hair density serums, scalp treatments, and leave-in conditioners. Typical use concentration is 2–5% in aqueous phase, combined with humectants like glycerin and preservatives such as phenoxyethanol. For lab research, it is used in ex vivo hair follicle organ culture studies to measure anagen phase prolongation and dermal papilla cell proliferation.

Bulk wholesale buyers include contract manufacturers producing private-label hair care lines, nutraceutical companies developing oral peptide supplements, and dermatology clinics formulating prescription-grade scalp solutions. The product's low viscosity (10–50 cP at 25°C) facilitates easy integration into existing manufacturing lines without specialized equipment.

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Bulk Purchase Selection Guide

Common pitfalls when sourcing multi-peptide serums include accepting certificates of analysis without third-party verification, overlooking endotoxin limits for injectable-grade products, and assuming all peptide complexes have identical stability profiles. Professional buyers should request accelerated stability studies at 40°C/75% RH for 6 months to confirm formulation robustness.

• Selection Standards: Verify peptide content via independent HPLC, confirm absence of residual solvents (DMSO, acetonitrile) below 50 ppm, and check for visible particulates after centrifugation at 3000 rpm for 10 minutes.
• Buyer Checklist: Request batch-specific MSDS, obtain stability data under your intended storage conditions, and confirm compatibility with your preservative system through challenge testing.

Core Product Advantages

Our multi-peptide serum offers ≥98% purity with verified batch consistency, eliminating the variability seen in lower-grade alternatives. The water-soluble formulation at pH 5.5–6.5 integrates seamlessly into aqueous cosmetic systems without requiring emulsifiers or heat. Cost performance is optimized through bulk packaging options (1 kg, 5 kg, 25 kg HDPE drums) with volume discounts up to 30% for orders above 100 kg. Technical support includes formulation guidance, stability testing, and regulatory documentation for global markets.

Frequently Asked Questions

Q: What is the recommended storage condition for bulk quantities of this serum?
A: Store at 2–8°C in sealed, light-resistant containers. Avoid exposure to temperatures above 25°C for extended periods, as this may accelerate peptide degradation. For long-term storage beyond 12 months, maintain at -20°C.

Q: How does this product compare to single-peptide hair serums in terms of efficacy?
A: Multi-peptide formulations target multiple signaling pathways simultaneously, including Wnt/β-catenin and TGF-β, which single peptides cannot achieve. Clinical data shows 35% higher hair density improvement over 6 months compared to single-peptide controls.

Q: Can this serum be used in combination with minoxidil or other active ingredients?
A: Yes, compatibility studies show no precipitation or activity loss when combined with minoxidil up to 5%, caffeine up to 3%, or biotin up to 1%. However, avoid direct mixing with strong acids (pH <4) or strong bases (pH >8) to prevent peptide hydrolysis.