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In the ingredient descriptions: Good means that I like to see this in a product's list of ingredients. Okay means this product appears safe for a curly person like me to use. Caution means that this ingredient may not be good in some hair care products, or for some people. Avoid means this ingredient may hurt your hair. If you see this ingredient in a hair product, it's best to put it down and walk away.

Please select a letter to search for ingredients:

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PEG 7 dimethicone C8-C18 ester   
Okay
Conditioning ingredient.
Source(s): http://www.thebeautybrains.com

PEG 100 stearate   
Okay
Thickens product.
Source(s): Begoun

PEG    (aka Polyethylene glycol; Ethylene Glycol)
Okay
Abbreviation for polyethylene glycol [Winter Pg 389].
See also: Polyethylene glycol
Source(s): Winter

PEG-3 Dimethicone   
Okay
Hair conditioning ingredient. Increases suppleness.
See also: Dimethicone copolyol Silicone
Source(s): http://www.cosmeticsinfo.org/ingredient_details.php?ingredient_id=1437

PEG-3 dioleoyl amidoethylmonium methosulfate   
Caution
PEG is the acronym for polyethylene glycol. Depending on what it is mixed with, it could be a cleanser, stabilizer, or an emollient.—So far I haven't found any information on this ingredient, so I'm listing it as a Caution until I can get more data.—T
See also: Polyethylene glycol

PEG-3 to -200 Castor Oil   
Okay
These are commonly used for emollients, conditioning, and to help oils rinse off better in water. They are also found in makeup. This is made from a combination of Polyethylene Glycol and Castor Oil. The higher the number, the more solid the ingredient is [Winter pg 389].
See also: Polyethylene glycol Castor oil
Source(s): Winter

PEG-4,-6, -8, -9, -10, -12, -14, 16, -18, -32, -40, -150, -200, -350   
Okay
PEG is the abbreviation for polyethylene glycol. This is usually mixed with fatty acids and fatty alcohols in different amounts to create a liquid or waxy ingredient. The number refers to how liquid it is, with the higher numbers meaning the substance is harder, and the lower numbers mean it is more liquid. These are often used as cleansers, emollients, and to keep the products from separating [Begoun pgs 1318, 1322-1323. Winter pg 389].
See also: Polyethylene glycol Fatty acid Fatty alcohol
Source(s): Begoun Winter

PEG-4 through -150 dilaurate    (aka Polyethylene glycol)
Okay
Made from Lauric acid and Polyethylene glycol. The higher the number after PEG, the more solid the ingredient [Winter 7th ed., pg 396].
See also: Polyethylene glycol Lauric acid
Source(s): Winter PEG-150 dilaurate PEG-150 dilaurate

PEG-7 Dimethicone   
Caution
This leaves a thin film on the hair. These are best avoided in shampoo and conditioners because they can build up and get sticky.
See also: Dimethicone copolyol Film-former Silicone
Source(s): http://www.cosmeticsinfo.org/ingredient_details.php?ingredient_id=1437

PEG-7 glyceryl cocoate   
Okay
Used for conditioning and as an emollient. It also helps products from separating into its oil and water components. Made from coconut acid (from coconut oil) and polyethylene glycol. Not considered toxic or irritating. It's a yellowish, clear oily liquid that's soluble in water [Hunting (Conditioning) pg 318; Winter pg 390].
See also: Polyethylene glycol Coconut oil
Source(s): Hunting Winter

PEG-8   
Okay
Humectant.
See also: Humectant

PEG-8 Dimethicone   
Okay
Hair conditioning ingredient. Increases suppleness.
See also: Dimethicone copolyol Silicone
Source(s): http://www.cosmeticsinfo.org/ingredient_details.php?ingredient_id=1437

PEG-8 Distearate   
Okay
Used as a conditioner, thickener, an emollient, and to keep the product from separating. This ingredient is known to be "superfatting", which means it's very emollient because it contains extra oil or fat [Hunting (Conditioning) pg 316]..
Source(s): Hunting

PEG-9 Dimethicone   
Okay
Hair conditioning ingredient. Increases suppleness.
See also: Dimethicone copolyol Silicone
Source(s): http://www.cosmeticsinfo.org/ingredient_details.php?ingredient_id=1437

PEG-10 Dimethicone   
Okay
Hair conditioning ingredient. Increases suppleness.
See also: Dimethicone copolyol Silicone
Source(s): http://www.cosmeticsinfo.org/ingredient_details.php?ingredient_id=1437

PEG-12 Dimethicone   
Okay
Hair conditioning ingredient. Often refered to as dimethicone copolyol. Silicone used to increase suppleness.
See also: Dimethicone copolyol Silicone
Source(s): Winter http://www.cosmeticsinfo.org/ingredient_details.php?ingredient_id=811

PEG-14 Dimethicone   
Okay
Hair conditioning ingredient. Increases suppleness.
See also: Dimethicone copolyol Silicone
Source(s): http://www.cosmeticsinfo.org/ingredient_details.php?ingredient_id=1437

PEG-14 M    (aka PEG-14000)
Avoid
This is a synthetic polymer (a substance with a large number of similar units bound together) of ethylene oxide that is used as a binder to keep the mixture together, such as keeping oil and water mixed together. It also increases the thickness of a product [Gottschalck page 1881]. I'm putting this as an avoid because ethylene oxide is considered dangerous and this is made up of lots of ethylene oxide --T
See also: Polymer Ethylene oxide
Source(s): Gottschalck

PEG-17 Dimethicone   
Okay
Hair conditioning ingredient. Increases suppleness.
See also: Dimethicone copolyol Silicone
Source(s): http://www.cosmeticsinfo.org/ingredient_details.php?ingredient_id=1437

PEG-40 Castor Oil    (aka Polyethylene Glycol 200 Castor Oil)
Okay
It's used to keep the product from separating into its oil and water components, as a conditioner, and as an emollient. Not known as a big skin or eye irritant. This is a somewhat thick, yellowish to amber colored liquid that's water soluble. Known for being very mild, but may become unstable at an extreme pH, and it also has a particular odor, according to Hunting (Conditioning) [pgs 313-314]. Made from Polyethylene Glycol and Castor Oil [Winter pg 389].
See also: PEG Poylethylene glycol Castor oil PEG-3 to -200 Castor Oil
Source(s): Hunting Winter

PEG-40 Hydrogenated Castor Oil   
Okay
Used for conditioning, thickener, and to keep product from separating into oil and water components. This is made from Castor oil that's been thickened by hydrogenation, then processed with polyethylene glycol.

This is an off-white solid that's water soluble in warm water, considered to be safe and mild in cosmetics. The main difference between PEG-40 Hydrogenated Castor Oil and PEG-40 Castor Oil is that the Hydrogenated Castor Oil is more solid at room temperature, and it has less of a "Castor" scent. [Hunting (Conditioning) pg 318].
See also: PEG Hydrogenation Castor oil PEG-40 Castor oil
Source(s): Hunting

PEG-60 almond glycerides   
Okay
Slightly conditioning and emollient, cleanser, emulsifier (keeps product from separating into oil and water components).
Source(s): http://www.cosmeticsdatabase.com/ingredient.php?ingred06=704637&refurl=/product.php?prod_id=67439&¬hanks=1 http://thebeautybrains.com/2006/07/02/beauty-review-new-herbal-essences-shampoo-drama-clean-and-more/

PEG-75 Lanolin   
Good
Made from processed lanolin so that it's water soluble. Used to keep products from separating into its oil and water components. Also used as a conditioning ingredient. It isn't believed to be irritating to the skin or eyes, and some claim it may even reduce irritation caused by other ingredients. It's soft, waxy, and yellow colored [Hunting (Conditioning) pgs 319-320].
See also: Polyethylene glycol Fatty acid Fatty alcohol Lanolin
Source(s): Hunting

PEG-80 sorbitan laurate   
Okay
Gentle cleanser.
Source(s): Begoun

PEG-120 methyl glucose dioleate   
Okay
Cleanser that's found in bath soaps, facial cleansing creams, shampoos, conditioners, and other hair products. It can be made from plant, animal, or synthetic sources [Gottschalck (12th ed) pg 1886].
Source(s): Gottschalck

PEG-150 dilaurate   
Okay
Made from Polyethylene glycol and Lauric acid. Used as an emollient, a thickener. A water soluble, white-ish cream, or a waxy solid. Known as being mild, and may often be used in other products to reduce the irritation of other ingredients [Hunting (Conditioning) pg 314-315].
See also: Polyethylene glycol Lauric acid
Source(s): Hunting

PEG-150 distearate   
Okay
Thickener.
Source(s): http://www.cosmeticscop.com/

PEG/PPG-3/10 Dimethicone   
Okay
Cleanser that works by helping water mix with dirt and oil so they can be rinsed away.
See also: Dimethicone copolyol Silicone Surfactant
Source(s): http://www.cosmeticsinfo.org/ingredient_details.php?ingredient_id=1437

PEG/PPG-4/12 Dimethicone   
Okay
Cleanser that works by helping water mix with dirt and oil so they can be rinsed away.
See also: Dimethicone copolyol Silicone Surfactant
Source(s): http://www.cosmeticsinfo.org/ingredient_details.php?ingredient_id=1437

PEG/PPG-6/11 Dimethicone   
Okay
Cleanser that works by helping water mix with dirt and oil so they can be rinsed away.
See also: Dimethicone copolyol Silicone Surfactant
Source(s): http://www.cosmeticsinfo.org/ingredient_details.php?ingredient_id=1437

PEG/PPG-8/14 Dimethicone   
Okay
Cleanser that works by helping water mix with dirt and oil so they can be rinsed away.
See also: Dimethicone copolyol Silicone Surfactant
Source(s): http://www.cosmeticsinfo.org/ingredient_details.php?ingredient_id=1437

PEG/PPG-14/4 Dimethicone   
Okay
Cleanser that works by helping water mix with dirt and oil so they can be rinsed away.
See also: Dimethicone copolyol Silicone Surfactant
Source(s): http://www.cosmeticsinfo.org/ingredient_details.php?ingredient_id=1437

PEG/PPG-15/15 Dimethicone   
Okay
Anticaking ingredient. Keeps any powders or grainy substances from clumping in a product.
See also: Dimethicone copolyol Silicone
Source(s): http://www.cosmeticsinfo.org/ingredient_details.php?ingredient_id=1437

PEG/PPG-16/2 Dimethicone   
Okay
Cleanser that works by helping water mix with dirt and oil so they can be rinsed away.
See also: Dimethicone copolyol Silicone Surfactant
Source(s): http://www.cosmeticsinfo.org/ingredient_details.php?ingredient_id=1437

PEG/PPG-17/18 Dimethicone   
Okay
Cleanser that works by helping water mix with dirt and oil so they can be rinsed away.
See also: Dimethicone copolyol Silicone Surfactant
Source(s): http://www.cosmeticsinfo.org/ingredient_details.php?ingredient_id=1437

PEG/PPG-18/18 Dimethicone   
Okay
Belongs to the group of ingredients referred to as dimethicone copolyols. Cleanser that helps keep the product from separating.
See also: Dimethicone copolyol Silicone
Source(s): http://www.cosmeticsinfo.org/ingredient_details.php?ingredient_id=822

PEG/PPG-18/18 Dimethicone   
Okay
Cleanser that works by helping water mix with dirt and oil so they can be rinsed away.
See also: Dimethicone copolyol Silicone Surfactant
Source(s): http://www.cosmeticsinfo.org/ingredient_details.php?ingredient_id=1437

PEG/PPG-19/19 Dimethicone   
Okay
Cleanser that works by helping water mix with dirt and oil so they can be rinsed away.
See also: Dimethicone copolyol Silicone Surfactant
Source(s): http://www.cosmeticsinfo.org/ingredient_details.php?ingredient_id=1437

PEG/PPG-20/6 Dimethicone   
Okay
Cleanser that works by helping water mix with dirt and oil so they can be rinsed away.
See also: Dimethicone copolyol Silicone Surfactant
Source(s): http://www.cosmeticsinfo.org/ingredient_details.php?ingredient_id=1437

PEG/PPG-20/15 Dimethicone   
Okay
Cleanser that works by helping water mix with dirt and oil so they can be rinsed away.
See also: Dimethicone copolyol Silicone Surfactant
Source(s): http://www.cosmeticsinfo.org/ingredient_details.php?ingredient_id=1437

PEG/PPG-20/20 Dimethicone   
Okay
Cleanser that works by helping water mix with dirt and oil so they can be rinsed away.
See also: Dimethicone copolyol Silicone Surfactant
Source(s): http://www.cosmeticsinfo.org/ingredient_details.php?ingredient_id=1437

PEG/PPG-20/23 Dimethicone   
Okay
Keeps a product from separating into its oil and water components. Also used as a hair conditioning ingredient. Increases suppleness and adds slipperiness. Also added to a product to either help the product attract or repel water better. It's used to help one ingredient dissolve inside another one.
See also: Dimethicone copolyol Emulsifier Silicone
Source(s): http://www.cosmeticsinfo.org/ingredient_details.php?ingredient_id=1437

PEG/PPG-20/29 Dimethicone   
Okay
Cleanser that works by helping water mix with dirt and oil so they can be rinsed away.
See also: Dimethicone copolyol Silicone Surfactant
Source(s): http://www.cosmeticsinfo.org/ingredient_details.php?ingredient_id=1437

PEG/PPG-22/24 Dimethicone   
Okay
Cleanser that works by helping water mix with dirt and oil so they can be rinsed away.
See also: Dimethicone copolyol Silicone Surfactant
Source(s): http://www.cosmeticsinfo.org/ingredient_details.php?ingredient_id=1437

PEG/PPG-23/6 Dimethicone   
Okay
Keeps a product from separating into its oil and water components. Adds slipperiness. Also added to a product to either help the product attract or repel water better. It's used to help one ingredient dissolve inside another one.
See also: Dimethicone copolyol Emulsifier Silicone
Source(s): http://www.cosmeticsinfo.org/ingredient_details.php?ingredient_id=1437

PEG/PPG-23/23 Dimethicone   
Okay
Cleanser that works by helping water mix with dirt and oil so they can be rinsed away.
See also: Dimethicone copolyol Silicone Surfactant
Source(s): http://www.cosmeticsinfo.org/ingredient_details.php?ingredient_id=1437

PEG/PPG-25/25 Dimethicone   
Okay
Cleanser that works by helping water mix with dirt and oil so they can be rinsed away.
See also: Dimethicone copolyol Silicone Surfactant
Source(s): http://www.cosmeticsinfo.org/ingredient_details.php?ingredient_id=1437

PEG/PPG-27/27 Dimethicone   
Okay
Cleanser that works by helping water mix with dirt and oil so they can be rinsed away.
See also: Dimethicone copolyol Silicone Surfactant
Source(s): http://www.cosmeticsinfo.org/ingredient_details.php?ingredient_id=1437



References:

Applewhite, Thomas H., ed. Proceedings of the World Conference on Lauric Oils: Sources, Processing, and Applications
AOCS Publishing, 1994.

Barel, André O., Marc Paye, and Howard I. Maibach., eds. Handbook of Cosmetic Science and Technology, Second Edition
Marcel Dekker, Inc., 2001.

Begoun, Paula. Don’t Go Shopping for Hair-Care Products Without Me. 3rd Edition.
Renton: Beginning Press, 2005.

Begoun, Paula. The Beauty Bible.
Renton: Beginning Press, 2002.

Begoun, Paula. Don’t Go to the Cosmetics Counter Without Me.
Renton: Beginning Press, 2003.

Bellum, Sarah, ed. The Beauty Brains: Real Scientists Answer Your Beauty Questions
New York: Brains Publishing, 2008.

Gottschalk, Tari E. and McEwen, Gerald N, Jr. PhD, eds. International Cosmetic Ingredient Dictionary and Handbook, Tenth Edition 2004, Volumes 1-4.
Washington D. C.: The Cosmetic, Toiletry, and Fragance Association, 2004.

Halal, John Hair Structure and Chemistry Simplified, Fifth Edition
Albany: Milady, 2002.

Hunting, Anthony L.L. Encyclopedia of Conditioning Rinse Ingredients.
Cranford, NJ: Micelle Press, Inc., 1987.

Hunting, Anthony L.L. Encyclopedia of Shampoo Ingredients.
Cranford, NJ: Micelle Press, Inc., 1983.

Johnson, Dale H. (Ed.). Hair and Hair Care, Cosmetic Science and Technology Series. Vol. 17.
New York: Marcel Dekker, 1997. Print.

Nnanna, Ifendu A. and Jiding Xia., eds. Protein-Based Surfactants: Synthesis: Physicochemical Properties, and Applications (Surfactant Science)
Madison Heights: CRC, 2001.

Quadflieg, Jutta Maria. Fundamental properties of Afro-American hair as related to their straightening/relaxing behaviour.
Diss. U of Rheinisch-Westfälischen Technischen Hochschule Aachen, 2003.

Schueller, Randy and Perry Romanowski, eds. Conditioning Agents for Hair and Skin.
New York: Marcel Dekker, Inc., 1999.

Winter, Ruth M.S. A Consumer's Dictionary of Cosmetic Ingredients: Complete Information About the Harmful and Desirable Ingredients Found in Cosmetics and Cosmeceuticals
New York: Three Rivers Press, 2005.

Zviak, Charles., ed. The Science of Hair Care (Dermatology)
New York: Marcel Dekker, Inc., 1986.

 

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