HiSiaddi is an innovative foreign trade service provider driven by technological transformation and foreign trade services, with an integrated service system of "1+2+3+4=1", supplying acetyl hexapeptide-8 from multiple well-known original manufacturers.
As a research-driven foreign trade service provider, HiSiaddi has repeatedly delivered acetyl hexapeptide-8 formula optimization plans and application improvement suggestions through technical cooperation with manufacturers and accurate market research. Below is a complete project case of HiSiaddi’s consulting service for acetyl hexapeptide-8 formula optimization.
If you need more formula optimization consulting services, please contact HiSiaddi customer service.
The brand specializes in clinic anti-aging serums, firming eye creams and post-procedure repair essences. Its products hold EU SCCS safety certification and French COSMOS organic certification, supplying more than 180 private medical beauty centers and high-end drugstore chains across France. It previously purchased original acetyl hexapeptide-8 from Spain’s Lipotec for years.
To cut procurement costs and shorten sea freight delivery cycles, the brand switched to domestic raw materials in 2025, with an annual procurement volume of 6.9 tons of 20% liquid acetyl hexapeptide-8 for three core anti-aging products: high-activity anti-wrinkle serum, firming eye cream and compound AHA exfoliating lotion.
After switching to domestic raw materials, four major mass production failures occurred consecutively: formula delamination, raw material crystal precipitation, severe peptide activity loss during finished product storage and rapid discoloration of AHA systems. A total of 800kg of semi-finished products already produced were scrapped, and all production lines were shut down. The French R&D team failed to adjust the formula independently after multiple attempts, and fully entrusted HiSiaddi to trace raw material defects, optimize formula processes and rectify workshop production operations.
The client’s eye cream adopts an oil-heavy O/W emulsification system. The domestic hexapeptide uses ordinary petrochemical propylene glycol as solvent, with trace unremoved short peptide impurities and free acetic acid residues in the raw material. At low storage temperature (around 5℃), the solubility of short peptide impurities drops sharply, forming needle-shaped crystals that frequently block filter screens in filling pipelines. Each production line requires 3~4 shutdowns for cleaning daily, reducing production efficiency by 40%.
The free amino acid content of original Spanish raw materials is ≤0.12%, while domestic raw materials only reach ≤0.32% with residual trace iron and copper metal ions. The methionine groups in hexapeptide molecules are highly susceptible to oxidative degradation catalyzed by trace heavy metals. The finished product labels a 5% hexapeptide addition rate, yet the measured effective content on shelf life falls below 3%, failing to meet the anti-wrinkle efficacy acceptance standards of French clinics and exposing the brand to mass return risks from distributors.
The client’s exfoliating lotion contains 5% compound AHA with a pH value of 3.3~3.8. Acetyl hexapeptide easily undergoes peptide bond hydrolysis under strong acid conditions. Domestic raw materials carry high impurity levels, and impurities form complexes with AHA under weak acid environments, turning the transparent stock solution into dark yellow turbid liquid with oil-water delamination after 72 hours of standing. The preservative system simultaneously fails, leading to microbial over-limit.
The client retained the production process adapted to Spanish raw materials, directly adding hexapeptide stock solution after heating the emulsion matrix to 70℃. Domestic hexapeptide has weak heat resistance; irreversible denaturation of peptide chains occurs above 45℃. Excessive feeding temperature causes instant activity loss of prepared materials, resulting in drastic efficacy fluctuations and significant batch differences of finished products.
Domestic suppliers only adopt single chromatography purification without secondary refining procedures: ① Loose control standards for free short peptides, free amino acids and organic acid by-products; ② Petrochemical industrial-grade propylene glycol solvent with excessive trace heavy metal impurities; ③ No low-temperature stability conditioning for stock solution, compatible only with neutral conventional serums, intolerant to low temperature and strong acid systems.
The client’s formula was directly copied from the original version designed for European imported raw materials, without optimizing buffer and chelating systems to adapt to high impurity levels of domestic raw materials: ① No dedicated buffer system in AHA formulas to isolate strong acid; ② No gluconolactone chelating agent added across all product lines to complex heavy metal ions and inhibit peptide oxidative degradation.
The traditional high-temperature feeding process was retained without adaptation to the thermal sensitivity of domestic hexapeptide, and feeding sequence and temperature control parameters were completely incompatible with the physical and chemical properties of domestic raw materials.
1. Upgrade purification process: Add secondary reverse chromatography and low-temperature recrystallization on the basis of original single chromatography, strictly controlling free amino acids ≤0.13%, free organic acids ＜0.08% and single heavy metal content ＜0.09%, with indicators benchmarking the internal control standards of imported Spanish raw materials.
2. Replace solvent: Substitute conventional petrochemical propylene glycol with European-certified corn fermented plant-based propylene glycol to improve low-temperature solubility. After rectification, no crystal precipitation occurs after 30 days of refrigeration at -5℃.
3. Pre-stabilization treatment of stock solution: Add trace food-grade antioxidant auxiliaries at the end of production to improve the heat resistance of hexapeptide, avoiding rapid degradation under short-term 50℃ exposure. Optimized samples were sent to the French laboratory for HPLC testing, with activity stability and low-temperature stability fully matching imported raw materials.
1. Firming eye cream formula optimization: Add 0.15% gluconolactone chelating agent to complex trace metal impurities; fine-tune emulsifier ratio to improve the system’s tolerance to hexapeptide impurities, completely eliminating low-temperature crystallization issues.
2. AHA exfoliating lotion formula optimization: Build a citric acid-sodium citrate buffer system to lock the pH value at 4.5±0.2, avoiding the hydrolysis range of hexapeptide under strong acid; adjust hexapeptide to be added at the later low-temperature stage to prevent long-term contact with AHA and eliminate discoloration and delamination.
3. High-activity anti-aging serum optimization: Compound trace vitamin E derivative antioxidant components to block heavy metal-catalyzed oxidation reactions. After 3-month accelerated stability testing of finished products, the retention rate of hexapeptide activity reaches ≥92%.
1. Temperature control adjustment: Abolish the 70℃ high-temperature feeding process, stipulating that hexapeptide stock solution can only be added after the emulsion matrix cools down to 38~42℃ to avoid peptide chain denaturation caused by high temperature.
2. Feeding method optimization: Pre-disperse hexapeptide stock solution with the same propylene glycol used in the formula for 15 minutes, then add it slowly and evenly to the water phase to prevent agglomeration and precipitation caused by excessive local concentration.
3. Batch quality control: Retain samples before and after each batch preparation for HPLC activity testing; establish full-item incoming inspection standards (purity, impurities, low-temperature stability) and reject unqualified raw materials directly.
1. Lab samples: Small-batch trial production with optimized raw materials and revised formulas. The French laboratory carried out 3-month accelerated aging, high-low temperature cycle and human efficacy tests. The appearance, stability and hexapeptide activity of the three products fully met COSMOS and French drug regulatory standards.
2. Batch delivery: 6.9 tons of rectified raw materials were shipped to Marseille Port in 5 batches. HiSiaddi supplied EU bilingual COA, CLP-compliant GHS-MSDS and complete SCCS filing documents, and all French customs inspections passed smoothly.
3. Client-side mass production: All three anti-aging production lines resumed operation. Scrapped semi-finished products were reworked with optimized formulas, and new products were launched as scheduled across all French medical beauty terminals.
1. Mid-to-High-End French Client LuxePeau: The comprehensive procurement cost of domestic raw materials decreased by 29% compared with original Spanish products. The client renewed an annual framework order of 8.3 tons the following year and added demand for domestic substitution of tripeptide and pentapeptide raw materials. Terminal sales of the three clinic anti-aging products surged by 34% year-on-year in the first quarter after launch.
2. Domestic Peptide Manufacturer: Supported by this high-end French customized rectification standard, standardized production processes for clinic-grade high-end hexapeptide were established. The export premium of high-end grades reached 31%, and the factory subsequently successfully developed multiple skincare brands of the same positioning in Italy and Belgium.
3. Foreign Trade Service Provider HiSiaddi: A standardized technical service system for acetyl hexapeptide-8 was formed: raw material purification optimization + formula adaptation rectification + mass production process calibration + EU compliance support. HiSiaddi has continued to undertake foreign trade technical implementation projects for various cosmetic peptides thereafter.
Most domestic peptide manufacturers mass-produce general acetyl hexapeptide-8, prioritizing production cost reduction and simplifying purification procedures, resulting in obvious gaps between raw material impurity and stability indicators and international top imported raw materials. Mid-to-high-end European and American clinic skincare products feature streamlined formulas and strict regulatory control; tiny deviations in raw material indicators will trigger mass production accidents such as crystallization, discoloration and activity loss.
HiSiaddi simultaneously completed process rectification at the raw material end and two-way optimization of formulas and production processes at the client end, resolving full-chain technical pain points. It not only helped overseas brands cut procurement costs through domestic raw materials, but also promoted domestic peptide raw materials to enter the high-end European clinic supply chain. If you need more formula optimization consulting services, please contact HiSiaddi customer service.
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