saccharide isomerate

Good water-binding agent and emollient for skin.

saccharides

Saccharomyces calcium ferment

Extract of yeast fermented in the presence of calcium ions. It has no known benefit for skin.

Saccharomyces cerevisiae

Saccharomyces, from the Latin, literally means “sugar fungus,” and is the scientific name for the...

Saccharomyces copper ferment

Extract of yeast fermented in the presence of copper ions. There is no known benefit for skin,...

Saccharomyces iron ferment

Extract of yeast fermented in the presence of iron ions.

Saccharomyces lysate

Saccharomyces magnesium ferment

Extract of yeast fermented in the presence of magnesium ions.

Saccharomyces manganese ferment

Extract of yeast fermented in the presence of manganese ions.

Saccharomyces officinarum ferment

Derived from the sugarcane plant. Glycolic acid is also derived from sugarcane, but sugarcane...

Saccharomyces potassium ferment

Extract of yeast fermented in the presence of potassium ions.

saccharomyces selenium ferment

An ingredient created by the fermentation of the Saccharomyces yeast with the mineral selenium.

Saccharomyces silicon ferment

Extract of yeast fermented in the presence of silicon ions.

Saccharomyces zinc ferment

Extract of yeast fermented in the presence of zinc ions.

safflower seed oil

Emollient oil derived from the safflower (Carthamus tinctorius) plant.

sage extract

Plant used most often to enhance the flavor of foods. Like all plant extracts, sage...

salicin

salicylic acid

Also called beta hydroxy acid (BHA), this multifunctional ingredient addresses many of the systemic causes of acne.

Salix alba extract

Salix nigra (willow) bark extract

Salvia hispanica (chia) seed oil

Non-fragrant plant oil whose seeds are a rich source of fatty acids...

Salvia officinalis

Sambucus canadensis

Sambucus cerulea

Blue elderberry. May have antioxidant properties for skin.

Sambucus nigra

When taken orally, this has antioxidant properties (Source: Journal of Agricultural Food...

Sambucus nigra fruit extract

When taken orally, this has antioxidant properties (Source: Journal of Agricultural Food...

sandalwood oil

Fragrant oil that can cause skin-sensitizing reactions...

Santalum album seed extract

Latin name for sandalwood extract, which is used in cosmetics as a fragrance. It can have...

Sapindus mukurossi peel extract

A plant extract that is a natural source of saponin...

Saponaria officinalis extract

saponin

Group of natural carbohydrates, found in plants, that have considerable potential...

sarcosine

A synthetic amino acid derivative that functions as a skin conditioning...

Sargassum filipendula extract

sausurrea oil

Also called costus oil. Volatile oil and fragrant component used in cosmetics; it can be a skin...

Saxifraga sarmentosa extract

sclareolide

Fermented from clary sage and used as a fragrant component in cosmetics.

Sclerocarya birrea

More commonly known as marula oil, Sclerocarya birrea oil is a non-fragrant plant oil that's a rich source...

sclerotium gum

A plant-derived, gel-like polysaccharide (sugar-based) ingredient that’s used in cosmetics to thicken and stabilize formulas. It is considered safe as used in cosmetics, and is similar to xanthan gum.

Scutellaria baicalensis extract

SD alcohol

SD alcohol 40-2

Denatured alcohol used as a solvent. It can be drying and sensitizing to skin when one of the main...

sea buckthorn

Berry extract that grows on a shrub-like tree. Sea buckthorn is believed to have several topical...

Seamollient

Trade name for an algae extract.

sea salt

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

seaweed

Group of sea plants (scientific name: algae) of all sizes and shapes, and having a gelatin-like...

sea whip extract

Extract from a creature that inhabits coral reefs, known for its soothing properties...

sebacic acid

Used as a pH adjuster.

selenium

Mineral considered to be a potent antioxidant...

Serenoa serrulata extract

sericin

Scientific name for silk protein.

serine

sesame oil

Emollient oil similar to other nonfragrant plant oils.

Sesamum indicum

sesquioleate

Used in cosmetics as a thickening agent and emollient.

shea butter

Shea butter is a plant lipid extracted from the karite tree that is used as an emollient in cosmetics.

Siegesbeckia orientalis

Chinese herb (also known as St. Paul’s wort) for which there is no research showing that it has any...

silanetriol

silica

Mineral found abundantly in sandstone, clay, and granite, as well as in parts of plants and...

silica dimethyl silylate

Used as a slip and suspending agent.

silicate

Inorganic salt that has potent absorbing and thickening properties.

silicone

Substance derived from silica (sand is a silica). The unique fluid properties of silicone give it a...

silk

silk powder

Synthetically derived powder used as an absorbent and slip agent.

silk protein

Protein substance (also called sericin) formed by converting silk, which is the soft, lustrous...

siloxane

silt

A sediment obtained from various bodies of water. Silt’s absorbent nature helps it function to...

silver

Metallic element that in cosmetics can have disinfecting properties; however, prolonged contact can...

silver chloride

An inorganic salt that has no known function in cosmetics.

silver tip white tea leaf extract

Silybum marianum extract

simethicone

Mixture of dimethicone with silica; related to silicones, but used as an antifoaming agent.

Simmondsia chinensis

skin-replenishing ingredients

These are skincare ingredients that help enrich skin’s surface, drenching it with revitalizing hydration and keeping it there.

skin-restoring ingredients

Skincare ingredients that nourish skin’s surface in a way that helps transform it on many levels...

skullcap extract

Herbal extract from Scutellaria baicalensis that has antioxidant soothing properties...

slip agent

Term used to describe a range of ingredients that help other ingredients spread over the skin and...

slippery elm bark

Can be a skin-soothing ingredient.

soap

True “soaps” are regulated by the Consumer Product Safety Commission and are not required to list...

soapberry extract

Extract from the tree Sapindus saponaria. The berries contain a good amount of Saponins.

soapwort

Plant from which is derived an extract with detergent cleansing properties.

sodium acetate

The sodium salt derived from acetic acid, it serves as a buffering agent when used in small amounts.

sodium acrylate/acryloydimethyl taurate copolymer

Synthetic polymer used as a stabilizing and suspending agent and as a thickening agent.

sodium ascorbate

sodium ascorbyl phosphate

Sodium ascorbyl phosphate is a stable, water-soluble form of vitamin C that functions as an antioxidant.

sodium benzoate

Salt of benzoic acid used as a preservative.

sodium bicarbonate

A synthetic inorganic salt more commonly known as baking soda. It has many functions in cosmetics, including pH adjuster, buffering agent, and abrasive, such as in face or body scrubs.

sodium bisulfite

Used in acid-type permanent waves to alter the shape of hair. It is less damaging than alkaline...

sodium borate

sodium C14-16 olefin sulfonate

Can be derived from coconut. Used primarily as a detergent cleansing agent, but is potentially...

sodium carbomer

A blend of sodium (salt) and carbomer that functions as a stabilizer and film-forming agent.

sodium carbonate

Absorbent salt used in cosmetics; it can also be a skin sensitizer.

sodium carboxymethyl beta-glucan

A carbohydrate ingredient with a gel-like texture, it functions as a binding agent and texture...

sodium cetearyl sulfate

A mixture of stearyl and cetyl sulfate that funtions as a surfactant.

sodium chloride

More popularly known as common table salt. Used primarily as a binding agent in skincare products...

sodium chondroitin sulfate

Derived from natural mucopolysaccharides, it functions as a skin-softening agent and helps...

sodium citrate

Used primarily to control the pH level of a product, this ingredient also has antioxidant and...

sodium cocoamphoacetate

A gentle cleansing agent derived from coconut fatty acids. It functions as a cleansing agent and...

sodium cocoate

Used as a cleansing agent primarily in soaps. It can be drying and sensitizing for skin.

sodium cocoyl amino acids

The salt form of amino acids...

sodium cocoyl glutamate

A cleansing agent derived from coconut oil. This ingredient is also used to help soften (remove...

sodium cocoyl isethionate

Derived from coconut, it is a mild detergent cleansing agent.

sodium dehydroacetate

Organic salt used as a preservative.

sodium dilauramidoglutamide lysine

A plant-derived ingredient that helps replenish skin and hair...

sodium hexametaphosphate

Salt with multiple functions in cosmetics. It can act as a detergent, an emulsifier, a texturizer,...

sodium hyaluronate

The salt form of skin-replenishing ingredient hyaluronic acid.

sodium hyaluronate crosspolymer

A modified form of skin-replenishing hyaluronic acid attached to a polymer structure

sodium hydroxide

Also known as lye, it is a highly alkaline ingredient used in small amounts in cosmetics to...

sodium hydroxymethylglycinate

Derived from amino acids and used as a skin- and hair-softening agent, and to a lesser extent as...

sodium lactate

Sodium salt of lactic acid. Used primarily as a hydrating and buffering agent (to adjust a...

sodium lactobionate

White, crystalline powder used to synthesize other chemicals. May function as a preservative in...

sodium laureth-13 carboxylate

Used primarily as a detergent cleansing agent. 

sodium laureth sulfate

Can be derived from coconut; it is used primarily as a detergent cleansing agent. It is considered...

sodium lauroamphoacetate

Mild surfactant also used as a lather agent.

sodium lauroyl lactylate

Used as an emulsifier and mild thickening agent in cosmetics. In higher concentrations, it...

sodium lauroyl sarcosinate

Surfactant known (and used) for its foam-boosting properties.

sodium lauryl glucose carboxylate

A gentle cleansing agent that may be derived from coconut or made synthetically.

sodium lauryl sulfate

Versatile ingredient composed of several non-volatile alcohols. Functions primarily as a surfactant...

sodium metabisulfite

Reducing agent that alters the structure of hair. It can also be used as a preservative in...

sodium methyl cocoyl taurate

Mild surfactant.

sodium methyl taurate

Mild surfactant often combined with...

sodium myreth sulfate

Detergent cleansing agent similar to sodium laureth sulfate or ammonium laureth sulfate...

sodium palmate

A soap ingredient created by the salts of acids derived from palm oil. May be naturally-derived or...

sodium palm kernelate

sodium PCA

PCA (pyrrolidone carboxylic acid) is a natural component of skin that is also a very good...

sodium PEG-7 olive oil carboxylate

A mild surfactant formed by reacting fatty acids from olive oil esters from polyethylene glycol...

sodium phytate

The salt form of the corn-derived plant component phytic acid, used as a chelating agent in...

sodium polyacrylate

A synthetic polymer with multiple functions, including film-forming agent, stabilizer, absorbent,...

sodium salicylate

Salt form of salicylic acid (BHA). Because it is not the acid form of salicylate (i.e., salicylic...

sodium silicate

Highly alkaline and potentially sensitizing mineral used in cosmetics...

sodium stearoyl lactylate

A synthetic or animal-derived ingredient...

sodium sulfite

Reducing agent that alters the structure of hair. It can also be used as a preservative in cosmetic...

sodium tallowate

Sodium salt of tallow.

sodium thioglycolate

A synthetic ingredinet that functions as a reducing agent in cosmetics, most typically hair-removal lotions...

sodium trideceth sulfate

Solanum lycopersicum extract

Solanum tuberosum extract

Extract that is more commonly known as potato starch. Used as a thickening agent and texture enhancer in cosmetics.

solvent

Describes a large group of ingredients, including water, that are used to dissolve or break down...

Sonojell

Trade name for petrolatum.

soothing agent

Any ingredient that reduces certain signs of sensitivity in skin...

sorbic acid

Preservative derived from mountain ash berries or manufactured synthetically. Sorbic acid is used...

sorbitan oleate

Synthetic or animal-derived ingredient used as an emulsifier and cleansing agent.

sorbitan sesquioleate

sorbitan stearate

Used to thicken and stabilize cosmetic formulations.

sorbitol

Can be created synthetically or derived from natural sources. Similar to glycerin, it is a...

soy extract

Potent antioxidant and soothing agent for skin...

soy isoflavones

soy oil

Emollient oil similar to all nonfragrant plant oils.

spearmint oil

Fragrant, volatile oil that can cause skin sensitivity.

SPF

sphingolipids

Sphingolipids are complex lipids (fats) that function as skin-replenishing and conditioning ingredients...

Spiraea ulmaria

spirulina

squalane

Squalane is a moisturizing ingredient that’s also a source of skin-replenishing fatty acids and antioxidants.

squalene

Oil derived from shark liver or from plants (usually olives). It is a natural component...

St. John's wort

Contains several components that are harmful to skin in the presence of sunlight (Sources: Planta...

star anise

steapyrium chloride

Antistatic agent used in hair-care products.

stearalkonium chloride

Antistatic ingredient used in hair-care products to control flyaways and aid in helping a brush or...

stearalkonium hectorite

Used as a suspending agent.

stearates

steareth-20

Derived from the benign fatty ingredient stearyl alcohol, this functions primarily as a surfactant...

stearic acid

Fatty acid used as an emollient and emulsifier...

stearyl alcohol

Fatty alcohol used as an emollient and to help keep other ingredients intact in a formulation.

stearyl dimethicone

Stearyl dimethicone is a synthetic skin-conditioning agent that's a siloxane polymer...

stearyl glycyrrhetinate

The fatty acid form of the skin soothing glycyrrhetinic acid, which is derived from licorice.

stearyl methicone

Silicone polymer used as a skin-conditioning or occlusive agent.

stearyl stearate

A plant-based wax prepared with natural fatty acids combined with synthetic fatty alcohols.

styrax benzoin

styrene/acrylates copolymer

Synthetic polymer.

sucrose

Monosaccharide that has hydrating properties for skin.

sugarcane extract

Ingredients like sugarcane extract, fruit extracts, mixed fruit extracts, and milk solids may claim...

sulfates

Sulfates are a group of ingredients that have many consumers worried but in truth, misinformation, not sulfates, are the actual problem...

sulfur

Disinfectant agent that can be a potent skin sensitizer...

sunflower seed oil

Non-volatile plant oil used as an emollient in cosmetics.

sun protection factor

Most commonly seen as SPF, it is a number that is assigned to a product that identifies its ability...

superoxide dismutase

Enzyme considered to be an antioxidant...

surfactant

Shortened term for surface active agent. Surfactants degrease and emulsify oils and fats and...

sweet almond

Most often used in its oil form, this ingredient is expressed from almonds. Also used as an...

sweet almond oil

Emollient, non-fragrant plant oil.

Symphytum officinale extract

synthetic beeswax

An artificial form of beeswax composed of a mixture of alcohol esters...

synthetic wax

A wax derived from a mixture of various oils. It functions as a binding and stabilizing agent.

Szechuan peppercorn

From a plant native to Szechuan Province in China. It grows on trees, and so differs from black...