Page 254 - Cosmetology

Rosa gallica flower extract. Fragrant extract.

Rosa mosqueta. See rose hip oil.

Rosa roxburghii extract. Extract from the chestnut rose; can be a source of antioxidants for skin, and does
not impart fragrance.

Rosa rubiginosa. See rose hip oil.

rose flower. Highly fragrant substance that can be a skin irritant.

rose flower oil. Fragrant, volatile oil that can be a skin irritant and sensitizer. There is no research showing
this to have any benefit for skin.

rose hip. Seed-containing part of a rose. See rose hip oil and vitamin C.

rose hip oil. Good emollient oil that has antioxidant properties.

rose of Jericho extract. Extract from an annual desert plant with the scientific name Anastatica
hierochuntica. It has hygroscopic properties, meaning it can absorb moisture from the air. There is no
research showing this extract to have benefit for skin.

rose oil. Fragrant, volatile oil that can be a skin irritant and sensitizer.

rosemary extract. Can have antioxidant benefit for skin, but its aromatic components can cause irritation,
sensitizing, or toxic reactions on skin.

rosemary oil. See rosemary extract.

roseroot. See Sedum rosea root extract.

Rosmarinus officinalis extract. See rosemary extract.

royal jelly. Milky white, thick substance secreted by worker bees that has been shown to have some
immune-modulating benefits. The myriad other claims about royal jelly being able to prevent wrinkles and
heal acne are all anecdotal, and have no research to substantiate them.

Rubus idaeus. See red raspberry extract.

Rubus laciniatus. See blackberry.

Rubus occidentalis. See black raspberry.

Rubus suavissimus extract. Derived from the Chinese blackberry. Most likely, as is true for most berries,
this fruit extract has antioxidant properties. However, there is no research proving this to be the case.

Rubus ursinus x idaeus. See boysenberry.

Rubus ursinus. See marionberry.

Ruscogenine. An extract from the plant butcher’s broom, some research has shown it to be effective when
taken orally for improving the function of veins and capillaries. Whether or not it has benefit topically for
cellulite isn’t supported by independent research.

Ruscus aculeatus. See butcher's broom extract.

rutin. Bioflavonoid that is extracted from various plants and used as an antioxidant and emollient
S
saccharide isomerate. Good water-binding agent and emollient for skin. See mucopolysaccharide.

saccharides. See mucopolysaccharide.

Saccharomyces cerevisiae. Saccharomyces, from the Latin, literally means “sugar fungus,” and is the