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Rating Ingredient
Average

N6-furfuryladenine

Technical name for kinetin.

Average

N-acetyl-L tyrosine

Good

NaPCA

Categories: Skin-Replenishing
Poor

Narcissus poeticus wax

Fragrant flower extract that can cause sensitizing reactions…

Good

Nardostachys jatamansi

Average

Nasturtium officinale extract

Good

natto gum

Fermentation product of soy protein. It may be a potent antioxidant (Source: Journal of...

Best

natural moisturizing factor (NMF)

One of the primary elements in keeping skin feeling and looking healthier…

Categories: Skin-Replenishing
Average

neem extract or oil

Extract from leaves of the neem tree, it has potential sensitizing effects, although it also has been...

Good

neopentyl glycol dicaprylate/dicaprate

Used as an emollient and texture enhancer.

Good

neopentyl glycol diheptanoate

Mixture of texture-enhancing ingredient neopentyl glycol and grape-derived fatty acid heptanoic acid...

Poor

neroli

Poor

neroli oil

Fragrant plant oil that can be a skin sensitizer...

Average

nettle extract

Extract that may have soothing properties...

Best

niacin

Categories: Skin-Restoring, Vitamins
Best

niacinamide

Also known as vitamin B3 and nicotinic acid, niacinamide is a very effective skin-restoring ingredient...

Best

nicotinamide

Categories: Skin-Restoring, Vitamins
Best

nicotinic acid

Categories: Skin-Restoring, Vitamins
Good

noni juice

Also known as morinda or Morinda citrifolia, comes from a small evergreen tree. The juice from this...

Good

nonoxynols

Used as a mild cleansing agent.

Categories: Cleansing Agents
Good

nylon-12

Powder substance that is used as an absorbent and texture enhancer...

Best

Nymphaea tetragona

Also known as pygmy waterlily. The stem has been shown to be an antioxidant...

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!