Lecos
Direct-from-manufacturer 1 Oz and specialty cosmetic glass containers. Engineered for high chemical compatibility, precision sealing, and luxurious aesthetics.
As cosmetics, pharmaceuticals, and health sectors transition to sustainable, high-stability packaging solutions, the traditional 1 Oz (approx. 30ml) glass jar stands at the intersection of regulatory safety and luxury brand identity.
Modern cosmetic chemical formulations (specifically those containing active ingredients like retinol, pure Vitamin C, and essential acids) require chemically inert containers to prevent degradation. Lecos Glass manufactures Type III soda-lime glass and USP Type I borosilicate glass. These materials guarantee zero chemical leaching, protecting the formulation's integrity over extended shelf lives.
By leveraging state-of-the-art IS (Individual Section) forming machines and precise thermal annealing lehrs, we ensure that every jar exhibits superior mechanical strength, high thermal shock resistance, and minimal thickness variation.
Lecos Glass has been dedicated to the glass packaging industry for over 10 years. We specialize in producing innovative wholesale glass bottles and jars for cosmetics, perfume, personal care, essential oils, and candle jar glass packaging. We pride ourselves on offering bespoke glass solutions tailored to client specifications. Our diverse collections include:
Lecospack provides professional glass cosmetic packaging solutions to worldwide customers. We deliver innovative, stable quality, and cost-effective packaging aligned with your brand's unique identity. The quality of our products is strictly controlled to earn the favor of top-tier domestic and foreign brands.
We also offer comprehensive deep-processing services, including frosting, electroplating, spraying, decal application, and silkscreen printing.
Our company is built on a solid foundation of deeply held values that set us apart, steer our actions, and infuse every aspect of our corporate culture. Central to our business practices is our unwavering commitment to social responsibility, adherence to ethical standards, and steadfast support for universal human rights.
We protect the environment, foster internal creativity, celebrate diversity, and ensure our workplace remains a safe, collaborative, and inspiring community for our employees.
To excel under Google's E-E-A-T guideline standards, we supply robust data on structural integrity, material compliance, and global logistical protocols.




Lecos Glass maintains alignment with major global health standards, including FDA Title 21 CFR compliance for food/cosmetic contact substances, and Regulation (EC) No 1907/2006 (REACH). Our raw materials undergo heavy metal analysis to ensure lead, cadmium, mercury, and hexavalent chromium concentrations remain well below hazardous thresholds.
Our leak-tightness testing is executed under dynamic vacuum chambers to prevent micro-evaporation of volatile compounds. This makes our 1 Oz jars the premier choice for luxury organic formulations where chemical stability is paramount.
A brand’s touchpoint begins with its packaging. We integrate automated precision decoration directly within our manufacturing flow. Whether utilizing physical vapor deposition (PVD) for chrome finishes, inner-lacquer spray for multi-dimensional glass effects, or digital multi-color silk screening, our processes produce highly durable finishes.
By working with local and international regulatory agencies, we guarantee that all decoration materials use eco-friendly, lead-free inks that meet modern ESG metrics.




Explore our wider portfolio of glass containers, including standard dropper setups and travel cream containers designed to maximize brand equity.
Manufacturing premium 1 Oz glass jars involves a delicate balance of materials science and creative engineering. Here, we outline the exact processes utilized by top-tier suppliers to guarantee performance stability, physical safety, and brand value for global partners.
Every custom product begins with parametric CAD design. Using Finite Element Analysis (FEA), our structural engineers optimize glass distribution to eliminate stress points at the shoulder and base. We design specialized neck sizes (like 18/415 or customized threads) to guarantee complete compatibility with premium pumps, dropper assemblies, or child-resistant closures.
To prevent micro-scratching on automated filling lines, jars must undergo dual-surface treatment. At the hot-end (immediately after forming, around 550°C), a thin layer of tin oxide coating is applied. At the cold-end (leaving the annealing lehr at approx. 120°C), a food-grade polyethylene wax or monostearate treatment is added. This provides a low coefficient of friction, optimizing label application and reducing breakages.
Lecospack houses dedicated cleanrooms for cosmetic-grade surface treatments:
Key queries answered for global sourcing managers, logistics coordinators, and brand designers.
Explore our secondary premium container ranges, custom-designed for cosmetics, facial creams, and advanced beauty formulations.