Polyglyceryl-10 Isostearate

Polyglyceryl-10 Isostearate is a synthetic conditioning agent derived from glycerin and isostearic acid. It functions as an emollient — a substance that helps soften and smooth the skin by forming a protective layer on the surface.This ingredient is used in skincare formulations to improve texture and tactile feel, particularly in creams, serums and other leave-on products where a refined finish is desired. It appears in roughly 0.1% of skincare formulations, making it relatively uncommon.

Polyglyceryl-10 Isostearate works by depositing a light occlusive layer on the skin's surface. This layer mimics the skin's natural lipid barrier, helping to lock in moisture and prevent water loss without leaving a heavy or sticky residue.Because it is derived from multiple glycerol molecules linked to a fatty acid, it has both water-attracting and oil-attracting properties, allowing it to integrate smoothly into diverse formulation types.

Polyglyceryl-10 Isostearate is a passive conditioning agent, so no special application technique is required. Use products containing this ingredient as directed on the label, typically as part of your regular moisturising routine. It works well in layered routines and is compatible with most other skincare actives.

Polyglyceryl-10 Isostearate is generally well-tolerated and has a low irritancy profile. Some individuals sensitive to fungal acne (Malassezia) may wish to avoid it, as fatty acid esters can potentially feed fungal growth in susceptible skin.