chapter 10 review

depending on their pH, amphoteric surfactants can have

A positive or negative charge

sodium laureth sulfate is

A primary surfactant

The two ingredients most responsible for shampoo sales are fragrance and

Color

if a reaction occurs after using a shampoo consult the

MSDS

dandruff is caused by

Malassezia

transparent emulsions can be formulated as

Microemulsions ethyl alcohol ethanol

The charge of an amphoteric surfactant it depends on the shampoo

PH

quaternary ammonium compounds are

Quats

The type of volatile alcohol used in hairsprays is

SD alcohol

The major difference between a setting lotion and a finishing hairspray is

The amount of water

benefits of cationic surfactants include

The antibacterial cleansing ability

fatty alcohols are not drawing to the hair and are excellent conditioning agents

True

in general the smaller of the protein in the greater the hair damage the more absorption

True

surfactants with a negative charge are called

anionic

opposite charges

attract

preservatives improve a shampoos shelf life and inhibit the growth of

bacteria

and example of a common fatty alcohol is

cetyl alcohol

ingredients that prevent a film from depositing on the hair shaft are called

chelators

examples of emotions that are used in the beauty salons include most

cold creams, shampoos, and conditioners

ingredients that add shine and gloss to the hair or called

conditioner

Ethoxylated surfactant

decrease irritation

low concentrations of cationic surfactants that coat the hair shaft and improve what combing are called

detanglers

a micelle is a

droplet of oil dispersed in water

surfactants are used to

emulsify Oil and water, wet the hair, and condition the hair

aerosol hairspray's are more damaging to the environment than pump hairsprays

false

lather is essential to The cleansing ability of shampoo

false

natural ingredients such as herbs and botanicals always make shampoos work better

false

nonionic surfactants have both a positive and negative charge

false

shampoo is spread through the hair with small amounts of

foam

Products work by getting between the surface of the oil and water are called

folklore ingredient

water molecules are attracted to other water molecules by hydrogen bonding because

h is a polar molecule

A disadvantage of an ionic surfactants is that they can be

harsh or irritating

sodium PCA, sodium lactate, and glycerin are commonly used as

humectants

Water is:

hydrophilic

in a oil and water emulsion, oil is the

internal phase

molecules that have a positive or negative electrical charge are called

ions

A disadvantage of soap is

it leaves a residue

because of their versatility, amphoteric surfactants have the conditioning properties of cat ionic surfactants and

lower skin and eye irritation

substances added to make an ionic surfactant milder and less irritating

nonionic

at a pH of less than five or six, amphoteric surfactants are

positively charged

surfactants are able to wet the hair and disperse oil and water by

reducing surface tension

The only surfactant found in nature is

saponins

coacervates are used in

shampoo and conditioners and two in one shampoos

One of the most common types of detergent is

soap

The polar nature of water accounts for its ability to

stick together

all detergents are surfactants but all surfactants aren't detergent

true

all surfactant molecules have

two distinct parts

Cold creams are usually

w/o emulsions

The main ingredient in most shampoos is

water