Technical articles on cosmetic ingredients, formulation strategy and raw-material selection — written by our trading team from 21 years of hands-on sourcing experience.
Glyceryl stearate is the most-used nonionic emulsifier in personal care, yet the label covers three chemically different INCI products: Glyceryl Stearate (CAS 31566-31-1), Glyceryl Stearate SE (CAS 11099-07-3) and Glyceryl Stearate Citrate (CAS 39175-72-9). What each actually is, their HLB positions and typical use levels, the pH and electrolyte limits that make or break an SE-based emulsion, how the classic GMS/PEG-100 stearate pairing works, and the COA specs (monoester content, acid value, melting point) that decide a good drum from a bad one.
Polyglyceryl fatty acid esters cover the entire HLB range from W/O to strong O/W without a single ethylene oxide unit, which is why they have become the default answer to PEG-free and clean-label briefs. How to read the Polyglyceryl-N nomenclature (and why the N is not the esterification degree), which grades do which job — Polyglyceryl-3 Polyricinoleate (CAS 29894-35-7) for W/O, Polyglyceryl-4 Caprate (CAS 160391-93-5) for solubilisation, Polyglyceryl-10 Stearate (CAS 79777-30-3) for O/W, Polyglyceryl-6 Stearate/Behenate (CAS 95461-65-7 / 99149-24-3) for liquid crystals — typical use levels, electrolyte and pH tolerance, and the COA specs that separate a good drum from a bad one.
Hindered amine light stabilizers are the most efficient UV protection available for plastics, but the family splits into grades that behave nothing alike: low-molecular-weight types such as UV-770 (CAS 52829-07-9) and liquid UV-292 (CAS 41556-26-7 / 82919-37-7), polymeric types such as UV-944 (CAS 71878-19-8) and UV-622 (CAS 65447-77-0), the 944/622 blend UV-783, and low-basicity grades such as UV-123 (CAS 129757-67-1) and UV-2020 (CAS 192268-64-7). How the Denisov cycle works, which grade survives extraction and blooming, why acidic co-additives silently switch a conventional HALS off, typical loadings by application, and the COA specs that decide long-term performance.
Dimethicone (polydimethylsiloxane, CAS 63148-62-9, INCI Dimethicone) is the second half of the formulator's basic-oil toolkit alongside white mineral oil. What the cSt number actually measures, how 50/350/500/1000/1500 cSt map to skin care, hair care, color cosmetics, plastics and food antifoam, where the food-grade 100 cSt E900 fits in, and the COA specs (D4–D6 cyclics, volatile matter, flash point) that decide a cosmetic-grade dimethicone from an industrial-grade one.
One of the most versatile raw materials in fine chemicals, white mineral oil is sold in viscosity numbers (5# to 100#) and three purity grades — cosmetic, food and industrial — that are not interchangeable. What the N-number actually measures, how to map viscosity to each application, the regulatory differences between 8012-95-1 and 8042-47-5, and the COA specs that separate a premium white oil from a cheap one.
The world's most demanding lubricants — HFC/HFO refrigeration oils, aviation turbine oils, high-temperature chain oils and long-life greases — are built on esters of pentaerythritol and dipentaerythritol. The chemistry behind their thermal stability, a head-to-head comparison with diesters, PAOs and mineral oil, typical viscosity grades by application, and the polyol specs that decide the finished oil.
The same molecule, eight commercial forms: citric acid anhydrous vs. monohydrate, trisodium citrate (anhydrous and dihydrate), potassium citrate, calcium citrate, calcium citrate malate and ferric citrate — and how to match each form to acidulation, buffering, chelation and fortification jobs, with typical use levels and sourcing specs.
A practical guide to selecting polymer antioxidants — hindered phenols, phosphites and thioesters — with typical use levels, synergies, and the specs that matter when sourcing for polyolefins, styrenics, engineering plastics and rubber.
What separates a UVB workhorse from a photostable broad-spectrum filter? A practical comparison of nine organic UV filters — OMC, ethylhexyl triazone, octisalate, PBSA, padimate O, avobenzone, Mexoryl SX, Uvasorb HEB and Tinosorb S — covering absorption bands, photostability, solubility, regulatory limits and how to combine them into a stable high-SPF system.
How the alcohol core and acid chain length of three saturated branched esters — pentaerythrityl tetraisostearate, pentaerythrityl tetraethylhexanoate and octyldodecyl myristate — determine molecular weight, viscosity and skin feel, and how to pick between them for makeup, skin care and sun care.
Xanthan gum (CAS 11138-66-2) is the most forgiving natural thickener — if you hydrate it properly. Practical guidance on grades, dispersion technique, use levels and common failure modes.
Cetearyl alcohol explained — why this C16-18 fatty alcohol is nothing like ethanol, what it does in creams and hair conditioners, typical use levels, and which specs matter when sourcing.
A practical comparison of the two most common multifunctional preservation boosters — use levels, regulatory limits, skin feel and how to combine them for robust, low-dose preservation.