Safety
Explain Decontamination Method 1.
Remove visible debris; Wash tools in warm, soapy water; Soak in EPA-registered disinfectant.
The study of the hair, the disorders and diseases of hair and hair care.
Trichology
What is the difference between the 3 forms of matter?
How the molecules are placed within the space they occupy - i.e. very far apart (gas), very close together (liquid), and the closest together (solid).
The process of new hair growing from the scalp that has not yet been chemically altered, is called what?
New growth
Products used after a relaxer when rinsing that may turn pink once in contact with the relaxer left in the hair.
Neutralizing Shampoo
What is the high-pressured steam unit called, that is used for Decontamination Method 2?
An Autoclave
A strong, fibrous protein that is derived from amino acids.
Keratin
Explain the range of the pH scale.
0-14; acidic is 0-6.9, neutral is 7, and alkaline is 7.1-14. acidic products contract and harden the hair whereas alkaline products will swell and soften the hair.
The process that neutralizes any remaining alkaline residue left by the hydroxide relaxer and helps to restore the pH of the hair and scalp, is called what?
Hydroxide Neutralization
A combination of ammonia and thioglycolic acid that creates a reducing agent used in chemical relaxers and permanent waves.
Ammonium Thioglycolate (ATG)
The removal of any infectious materials on tools or surfaces by following all sanitation and disinfection guidelines.
Decontamination
Hair begins to form in what layers of the skin?
The underlying layers/The dermis
What is the difference between a gas and a vapor?
Vapors develop when liquids evaporates whereas gas occurs when a liquid is placed under extremely high or low temperatures.
Aldehyde results from the oxidation of what?
Primary alcohols
What is the average number of hair strands on the scalp?
100,000
A wet disinfectant is a liquid solution into which used tools are submerged for disinfection and it should be replaced daily. What is the most common wet disinfectant used in salons?
Barbicide
True or False: The cells that surround the cortex, the cuticle scales, are dried and dead.
True
True or False: All matter can be classified as either a mixed substance or a physical mixture.
False - pure substance.
What grouping of relaxers have a high pH?
Hydroxide Relaxers - higher than 12
An ingredient which leaves a metal coating on the hair.
Metallic salts
True or False: SDS sheets provide both the employer and the employee with the proper procedure for handling, working with, and storing chemicals in the workplace. They are made available from the supplier.
False - They are made available from the manufacturer which allows you to gather SDS information from your local product distributor, supplier or websites for the information.
The breaking of disulfide bonds happen within what time frame of the chemical texture service?
The first 5-10 minutes
True or False: Healthy, normal hair has both acidic and alkaline amino groups in its protein chains. The proteins have only positive ion charges.
False - they have both positive and negative ion charges.
Soft curl reformation is the combination of a ________ relaxer and a thio permanent that is wrapped on large rods, providing 2 services in 1.
Thio
A mild relaxer strength is best used on what textured hair? What porosity? And requires what amount of curl reduction?
Fine textured. Severe porosity and/or color treated hair. Moderate relaxation (25% curl reduction).