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Rating Ingredient
Best

rapeseed oil

Nonfragrant oil that has emollient and potential antioxidant properties for skin (Source: British...

Good

raspberry seed extract

Good

raspberry seed oil

Good

red 27 lake

Good

red 33

Good

red 6 lake

Good

red algae

Good

red clover

Can have antioxidant and soothing properties...

Good

red raspberry extract

Fruit extract that has potent antioxidant properties...

Good

reducing agent

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

Categories: Cleansing Agents
Best

resveratrol

Potent polyphenolic antioxidant that is abundant in red grapes and, therefore, in red wine...

Best

retinol

Retinol, the name for the entire vitamin A molecule, is a skin-restoring ingredient and an antioxidant.

Best

retinyl ascorbate

An ester of vitamin A (retinoic acid) and vitamin C (ascorbic acid) that functions as an antioxidant...

Categories: Antioxidants, Vitamins
Best

retinyl palmitate

Combination of retinol (pure vitamin A) and the fatty acid palmitic acid. Research has shown...

Best

retinyl retinoate

A synthetic, "new generation" retinol with research showing its usefulness for skin...

Categories: Skin-Restoring, Vitamins
Best

Rhodiola rosea root extract

The extract of the plant Rhodiola rosea, also known as Arctic root or golden root, that is high in antioxidants and flavonoids.

Categories: Antioxidants
Average

riboflavin

Categories: Vitamins
Good

rice bran oil

Emollient oil similar to other nonfragrant plant oils. There is no research showing this has any...

Categories: Plant Extracts, Emollients
Good

rice oil

Emollient similar to other nonfragrant plant oils. There is no research showing this has any...

Categories: Plant Extracts, Emollients
Good

rice starch

Absorbent substance sometimes included in products rather than talc....

Categories: Plant Extracts, Absorbent
Good

ricinoleate

Glyceryl triester used in cosmetics as a thickening agent and emollient.

Categories: Texture Enhancer
Good

Ricinus communis

Categories: Plant Extracts, Emollients
Poor

Robinia pseudacacia extract

Good

Rosa canina

Good

Rosa centifolia

Good

Rosa centifolia flower

Poor

Rosa damascena oil

Oil of a very fragrant pink rose used as fragrance in cosmetics.

Good

Rosa eglanteria

Poor

Rosa gallica flower extract

Fragrant extract.

Good

Rosa mosqueta

Best

Rosa roxburghii extract

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

Good

Rosa rubiginosa

Poor

rose flower

Highly fragrant substance that can be a skin sensitizer.

Poor

rose flower oil

Fragrant, volatile oil that can aggravate skin. There is no research showing...

Good

rose hip

Good

rose hip oil

Good emollient oil that has antioxidant properties (Sources: Journal of Agricultural Food...

Good

rosemary extract

Extract that can have antioxidant benefit for skin (Source: Journal of Agricultural Food Chemistry,...

Poor

rosemary oil

Fragrant plant oil derived from rosemary, Latin name Rosmarinus officinalis. This ingredient is primarily used as a fragrance in cosmetics...

Poor

rose oil

Fragrant, volatile oil that can aggravate skin.

Poor

rosewood oil

Fragrant plant oil with a spicy-sweet scent, also known as bois de rose. It is extracted from wood...

Poor

Rosmarinus officinalis extract

Average

royal jelly

The myriad claims about royal jelly are anecdotal and have no research to substantiate them.

Categories: Uncategorized
Good

Rubus idaeus

Best

Rubus occidentalis

Good

Rubus ursinus

Best

Rubus ursinus x idaeus

Best

Rubus villoscus

The Latin name for blackberry fruit extract. This plant extract has antioxidant ability...

Average

Ruscus aculeatus

Best

rutin

Bioflavonoid that is extracted from various plants and used in cosmetics as an antioxidant and...

Categories: Antioxidants, Emollients

About the Experts

Paula Begoun is the best-selling author of 20 books about skincare and makeup. She is known worldwide as The Cosmetics Cop and creator of Paula’s Choice Skincare. Paula’s expertise has led to hundreds of appearances on national and international radio, print, and television including:

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The Paula's Choice Research Team is dedicated to busting beauty myths and providing expert advice that solves your skincare frustrations so you can have the best skin of your life!