PEG-75 Crambe abyssinica seed oil is a chemical compound, a PEG (polyethylene glycol) derivative that has been obtained by a process of transesterification of Crambe abyssinica seed oil. 

The name describes the structure of the molecule:

• PEG stands for polyethylene glycol, a polymer used in cosmetics for its solubilizing and hydrating properties. The number "75" indicates the average molecular weight of the polyethylene glycol, which affects the viscosity and solubility of the product.
• Crambe abyssinica seed oil refers to the oil from the seeds of Crambe abyssinica, a plant known for its oil rich in fatty acids. Crambe abyssinica seed oil is valued in cosmetics for its emollient and nourishing properties, helping to moisturize and soften the skin.

Summary of Industrial Production Process.

• Extraction of oil from Crambe abyssinica seeds.
• Purification of the oil to remove impurities.
• Reaction of the purified oil with ethylene oxide to add ethoxylate groups (ethoxylation process).
• Monitoring the reaction to achieve the desired degree of ethoxylation.
• Final purification of the product to remove any chemical residues.
• Quality control to ensure specifications and safety.

What it is used for and where

Cosmetics

Skin conditioning agent - Miscellaneous. This ingredient has the task of modifying the condition of the skin when it is damaged or dry by reducing its flakiness and restoring its elasticity.

Surfactant - Emulsifying agent. Emulsions are thermodynamically unstable. Emulsifiers have the property to reduce the oil/water or water/oil interfacial tension, improve emulsion stability and also directly influence the stability, sensory properties and surface tension of sunscreens by modulating their filmometric performance.

Commercial Applications.

Used in cosmetic and skincare products as an emollient and conditioning agent. It enhances the texture of products and provides moisturizing and nourishing benefits.

Form and Color.

PEG-75 Crambe Abyssinica Seed Oil typically appears as a viscous liquid, usually colorless or very pale yellow.

Since the PEG (Polyethylene glycol) family is very large and can be found in cosmetic, industrial, pharmaceutical, medical and other products, it is necessary to make an introductory statement on the subject, which is rather complex from a safety point of view because these products not only come into contact with the skin, but, as in the case of medical products, are ingested.

PEGs (polyethylene glycol) polymerise condensed ethylene oxide and water and are referred to as polyethylene glycols, but in reality they are complex chemical components, polymers bonded together. For example, plastic is polyethylene and has a hard consistency, while polyethylene combined with glycol forms a liquid. PEGylation is produced not only as etherification, but also as transesterification, which is the transformation of an alcohol by an ester. The number appearing after the abbreviation PEG refers to mol of ethylene oxide and the higher this number is, the less it can penetrate the skin.

Safety. 

The term 'eth' refers to the ethoxylation reaction with ethylene oxide after which residues of ethylene oxide and 1,4-dioxane, chemical compounds considered carcinogenic, may remain. The degree of safety therefore depends on the degree of purity of the compound obtained. No manufacturer appears to provide this information on the label, at least as of the date of this review.