Cosmetics

In cosmetics and personal care manufacturing, the success of a formulation depends directly on the purity, batch-to-batch consistency and microbiological safety of the raw materials it is built on. From the moisturizing performance of a face cream to the foam profile of a shampoo, and from the sensory feel of a toner to the shelf-life stability of a lotion, every attribute is decided in the background by correctly chosen chemical raw materials. At YÜKSEK KİMYA, we supply cosmetic manufacturers from our warehouse in Kestel, Bursa with core formulation raw materials such as glycerine, mono propylene glycol, sodium benzoate and potassium sorbate — in the right purity grades, fully documented and on a reliable schedule.

Moisturizing and Humectant Chemistry

The most fundamental job of skin and hair care products is to hold water. Humectants are compounds that bind moisture from the surrounding air and from the deeper layers of the skin, retaining it at the epidermal surface; this group forms the backbone of cosmetic formulation.

Glycerine (glycerol) is the most widely used humectant in the sector. It appears in creams, lotions, serums, toothpastes and soaps as both a moisturizer and a viscosity/texture regulator. Thanks to its strongly hygroscopic nature, it protects the moisture balance of the skin barrier and gives the formulation slip and softness. Cosmetic applications generally call for vegetable-derived glycerine at high purity (USP/EP grade); parameters such as color (APHA), water content and residual fatty-acid levels have a direct effect on the sensory quality of the finished product.

Mono propylene glycol (MPG) is a lower-viscosity, fast-spreading humectant and solvent compared with glycerine. It dissolves actives, botanical extracts and certain preservatives within the formulation, and lends the product a light texture. It is used frequently in deodorants, toners, wet-wipe liquids, hair care products and serum bases. The value of MPG is that it combines solvency and moisture retention in a single ingredient. For a more detailed look at the chemical behavior, applications and purity grades of MPG, see our mono propylene glycol (MPG) guide.

These two humectants are often used together: glycerine delivers deep hydration and a rich texture, while MPG provides solvency and a lighter feel. The right ratio between them determines the skin feel of the finished product.

Preservatives and Microbiological Stability

Every water-containing cosmetic formulation is vulnerable to microbial growth. A preservative system is essential to prevent the development of bacteria, yeast and mold. The critical point here is that these preservatives work in a pH-dependent way.

Sodium benzoate and potassium sorbate are organic-acid-salt preservatives widely used in cosmetics and personal care and also approved at food grade. Both are effective in an acidic environment, because the actual preservative action comes from the free-acid form (benzoic acid and sorbic acid) released as the salt dissociates.

• Sodium benzoate is particularly effective against bacteria below pH 4.5. It is used in shampoos, shower gels, toners and liquid soaps.
• Potassium sorbate is strong against yeast and mold and remains functional up to roughly pH 6. It is preferred in creams, lotions and emulsion-based products.

Using the two together provides broad-spectrum protection: sodium benzoate targets bacteria, potassium sorbate targets fungi. However, the formulator must keep the pH around 5.5 — otherwise preservative efficacy drops sharply. This is why the pH design of the formulation is just as decisive as the choice of preservative.

Surfactants and Cleansing Systems

The cleansing and foaming performance of products such as shampoos, shower gels, facial cleansers and liquid soaps is determined by surfactants. These compounds lower the surface tension of water to emulsify oil and dirt; at the same time they shape sensory properties such as foam volume, creamy texture and rinsability.

In cosmetic formulation, anionic, amphoteric and nonionic surfactants are combined for different purposes: anionics deliver strong cleansing and foam, amphoterics add mildness and reduce eye irritation, and nonionics provide stabilization. Surfactant choice must also be compatible with the humectant and preservative system — for example, a high MPG content can improve the solubility of certain surfactants, while pH design simultaneously affects both surfactant performance and preservative efficacy. For a practical framework on how the surfactant classes behave and how to select between them, see our article on what surfactants are.

Purity Grades and the Importance of Documentation

For cosmetic raw materials, purity grade is not negotiable. The same chemical can differ sharply between food, technical and USP/EP/cosmetic grades in terms of heavy-metal content, microbial load, color and residual solvents. Using a technical-grade raw material in a product that touches the skin is unacceptable for both sensory quality and consumer safety.

For this reason we provide the correct documentation with every shipment:

• MSDS (Safety Data Sheet): required for the safe transport, storage and handling of the raw material.
• COA (Certificate of Analysis): documents the purity, water content, color and specification conformity of each batch.
• Batch (lot) traceability: critical for retrospective tracking in production records and for quality auditing.

These documents integrate directly into the cosmetic manufacturer's own quality assurance system and make internal audits and product-file preparation easier. YÜKSEK KİMYA operates within the framework of ISO 9001, ISO 14001, ISO 45001 and GHP, and stores raw materials under appropriate conditions.

Packaging, Logistics and Supply Security

In cosmetic production, continuity of supply matters as much as the formula itself. A humectant or preservative arriving without interruption and at the same specification is the guarantee of product consistency.

We supply products such as glycerine, MPG, sodium benzoate and potassium sorbate in jerrycan, drum, IBC and tanker options according to need. We package for volumes ranging from small-scale boutique production to industrial filling lines. Shipments are carried out in compliance with ADR regulations; the correct packaging and labeling standard is maintained for liquid glycols and powdered preservatives alike.

For all of your cosmetic raw material needs, you can review our glycols and derivatives and salts and preservatives categories, and see our full range on our products page.

Quote and Contact

Let us determine together the purity grade, packaging type and delivery schedule that suit your formulation. To receive a fast, clear price quote — complete with MSDS and COA documentation — for glycerine, mono propylene glycol, sodium benzoate, potassium sorbate and other cosmetic raw materials, call us on +90 224 326 27 50 or send your request through our contact page. Let our team reach out to arrange reliable, fully documented supply from our warehouse in Kestel, Bursa.