What it is
Rosa rubiginosa seed oil is a lightweight, non-fragrant plant oil obtained by pressing or extracting the seeds found within rosehips. It is rich in polyunsaturated fatty acids, notably linoleic and alpha-linolenic acids, and contains naturally occurring tocopherols and carotenoids. In formulations it functions as an emollient and skin-conditioning agent that helps soften and smooth the skin surface.
Safety & warnings
Rosehip seed oil is generally well tolerated and is considered low on the comedogenic scale, though very oil-reactive or acne-prone skin should monitor response. Because it is high in polyunsaturated fatty acids, it is prone to oxidation and is usually stabilized with antioxidants; oxidized oil can be more irritating. It is essentially fragrance-free and is not a common allergen.
Origin & sourcing
Plant-derived. It is cold-pressed or solvent-extracted from the seeds of Rosa rubiginosa (also associated with Rosa canina rosehips), with much production historically from South America.
History
Rosehip seed oil has a long folk and traditional cosmetic history in South America and has become widely used in modern skin care as a natural source of essential fatty acids.
Questions everyone asks
Is rosehip seed oil pore-clogging?
It is generally rated low on the comedogenic scale and suits many skin types, but individual responses vary, so acne-prone users should observe how their skin reacts.
Why is it paired with antioxidants?
It is high in polyunsaturated fatty acids that oxidize readily, so formulators often add tocopherol or other antioxidants to keep the oil stable.