Page 257 - Cosmetology

SD alcohol. See alcohol.

SD Alcohol 40-2. A denatured alcohol used as a solvent. It can be drying and irritating to skin when used as
one of the main ingredients in a cosmetic product. Lesser amounts are not cause for concern. See alcohol.

sea salt. Can be effective as a topical scrub, but if left on skin it can increase skin sensitivity to UVB
radiation.

sea whip extract. Extract from a creature that inhabits coral reefs, known for its anti-inflammatory properties
and antibacterial properties.

Seamollient. Trade name for an algae extract. See algae.

seaweed. Group of sea plants (scientific name algae) of all sizes and shapes, and having a gelatin-like
consistency. Many seaweeds have antioxidant and anti-inflammatory properties, but many other claims of
benefits are not proven. See algae.

sebaceous glands. Glands in the skin that open into hair follicles and from which sebum (oil) is secreted.

sebacic acid. Used as a pH adjuster.

Sechium edule extract. Extract of the chayote plant. There is a small amount of research showing it to
have antioxidant properties.

Sedum rosea root extract. Plant extract; there is no research showing it to have any benefit for skin.

selenium. Mineral considered to be a potent antioxidant.

self-heal. Plant that has antihistamine, anti-inflammatory, antiviral, and antioxidant properties when taken
orally. However, there is no research demonstrating this to be of benefit for skin when applied topically.

Sequoiadendron gigantea stem extract. Extract from part of the giant sequoia tree. There is no research
showing this extract to have any benefit for skin.

Serenoa Serrulata extract. See saw palmetto.

sericin. Scientific name for silk protein. See silk protein.

serine. See amino acid.

serum protein. See protein.

sesame oil. Emollient oil similar to other nonfragrant plant oils. See natural moisturizing factors.

Sesamum indicum. See sesame oil.

sesquioleate. Used in cosmetics as a thickening agent and emollient.

Shao-yao. See peony root extract.

shea butter. A plant lipid that is used as an emollient in cosmetics. See natural moisturizing factors.

shikonin. Common name for the Chinese plant Zi Cao, source of a plant extract with supposedly anti-
inflammatory properties. There is no research substantiating its effect on skin.

Shorea stenoptera butter. Fat obtained from the Borneo tallow nut. It is similar to cocoa and shea butter,
and has emollient properties for skin.

Siegesbeckia orientalis. Chinese herb (also known as St. Paul’s wort); there is no research showing that it
has any benefit for skin.