True
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b6eb977c-b2b7-49a8-a301-0e1f1b273f91

Ingredient Dictionary

Good

o-cymen-5-ol

Preservative used in cosmetics. Read More »

Categories: Preservatives

Poor

oak root extract

Extract that can be a skin sensitizer. Read More »

Categories: Sensitizing, Antioxidants, Plant Extracts

Best

oat beta-glucan

See beta-glucan

Categories: Antioxidants, Skin Soothing

Best

oat bran extract

Oat bran extract is a portion of the oat plant that contains antioxidant and soothing properties... Read More »

Categories: Plant Extracts, Skin Soothing, Antioxidants

Best

oat kernel extract

Oat kernel extract is the distilled form of the anti-irritant portion from oats. Read More »

Categories: Skin Soothing, Plant Extracts

Best

oatmeal

Can have skin-soothing properties… Read More »

Categories: Skin Soothing, Plant Extracts

Best

octinoxate

Also known as octyl methoxycinnamate and ethylhexyl methoxycinnamate… Read More »

Categories: Sunscreen Actives

Best

octisalate

Technical name for the active sunscreen ingredient octyl salicylate (also known as ethylhexyl... Read More »

Categories: Sunscreen Actives

Best

octocrylene

Sunscreen agent that protects skin from the UVB range of sunlight (Source: Skin Therapy Letter,... Read More »

Categories: Sunscreen Actives

Best

octyl methoxycinnamate

Sunscreen agent used to protect skin primarily from the sun’s UVB rays… Read More »

Categories: Sunscreen Actives

Good

octyl palmitate

Used in cosmetics as a thickening agent and emollient. Read More »

Categories: Thickeners/Emulsifiers, Emollients

Best

octyl salicylate

Sunscreen agent used to protect skin primarily from the sun’s UVB rays (Source: Skin Therapy... Read More »

Categories: Sunscreen Actives

Good

octyl stearate

Used in cosmetics as a thickening agent and emollient. Read More »

Categories: Thickeners/Emulsifiers, Emollients

Good

octyldodecanol

Emulsifier and opacifying agent, used primarily as a thickener in moisturizers because of its... Read More »

Categories: Thickeners/Emulsifiers, Emollients

Good

octyldodecyl myristate

Mixture of octyldodecanol (thickener) and myristic acid that forms a new compound used as a... Read More »

Categories: Emollients, Thickeners/Emulsifiers

Good

octyldodecyl neopentanoate

Skin-conditioning agent and emollient. Read More »

Categories: Emollients

Best

Oenothera biennis oil

See evening primrose oil

Categories: Plant Extracts, Skin Soothing, Emollients

Good

Olea europaea fruit oil

See olive oil/olive fruit oil

Categories: Antioxidants, Emollients, Plant Extracts, Skin Replenishing

Best

Olea europaea oil unsaponifiables

An unsaponifiable oil is the portion of a plant oil that is not broken down when the oil's fatty... Read More »

Categories: Antioxidants, Plant Extracts, Skin Replenishing, Emollients

Best

oleanolic acid

A skin-soothing ingredient, especially when used in synthetic rather than natural form... Read More »

Categories: Antioxidants, Skin Soothing

Good

oleic acid

Fatty acid used as a surfactant and thickening agent. Read More »

Categories: Thickeners/Emulsifiers, Surfactants/Detergent Cleansing Agents

Good

oleth-10

A form of fatty oleyl alcohol that functions as an emulsifier and surfactant.... Read More »

Categories: Surfactants/Detergent Cleansing Agents, Thickeners/Emulsifiers

Good

oleths

Mild surfactants. Read More »

Categories: Surfactants/Detergent Cleansing Agents

Good

oleyl erucate

Skin-conditioning agent derived from oleyl alcohol, which is obtained chiefly from fish oil. Read More »

Categories: Miscellaneous

Poor

olibanum extract

See frankincense extract

Categories: Sensitizing, Fragrance: Synthetic and Fragrant Plant Extracts

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About the Experts

Paula Begoun is the best-selling author of 20 books on skin care and makeup. She is known worldwide as the Cosmetics Cop and creator of Paula's Choice. Paula's expertise has led to hundreds of appearances on national and international television including:

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The Paula's Choice Research Team is dedicated to busting beauty myths and helping you solve your skincare frustrations with research-supported expert advice—so you'll have the facts you need to take the best possible care of your skin.

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