Chemical Texture Services
This is a perm wrap in which one end paper is folded in half over the hair ends like an envelope, eliminating excess paper and can be used with short rods or very short hair lengths
What is a bookend wrap?
This is the deeper layer of the dermis that supplies the skin with oxygen and nutrients
What is the reticular layer?
This is the entire flap of skin covering the matrix, extending from the edge of the visible nail plate to the first joint of the finger or toe and is commonly abbreviated to PNF
What is the proximal nail fold?
In a haircut, adding these will create movement and volume in hair by releasing weight
What are layers?
A solution that has a pH of 0-7 is this
What is acidic?
This type of chemical wave creates an exothermic chemical reaction that heats up the waving solution and speeds up processing
What are exothermic waves?
This is commonly called the basal cell layer; deepest, live layer of the epidermis that produces skin cells and is responsible for growth
What is the stratum germinativum?
This is the technical term for fingernails or toenails
This is a guideline that moves as the haircutting progresses and is often used when creating layers or graduation
What is a traveling guideline?
This is also known as redox; a chemical reaction in which the oxidizing agent is reduced (by losing oxygen) and the reducing agent is oxidized (by gaining oxygen)
What is oxidation–reduction?
A semipermanent treatment that smooths curly and wavy hair textures and eliminates frizz for up to 12 weeks is done with this main ingredient
What is a keratin smoothing treatment?
This is an acquired superficial thickened patch of epidermis, also known as a callus
What is a keratoma?
This is the collective name for the nail bed, nail fold, eponychium, paronychium, and hyponychium
What is the perionychium?
You should purchase the necessary hair for a client during this time frame prior to their hair extension appointment
What is 1-2 weeks?
Liquids that are not capable of being mixed together to form stable solutions are called this
What is immiscible?
These relaxers use reduction and oxidation to break the disulfide bonds and then reform them to a more relaxed hair texture, use the same ammonium thioglycolate (ATG) that is used in permanent waving, but at a higher concentration and a higher pH (above 10)
What are thio relaxers?
These are environmental factors that contribute to skin aging such as smoking, pollution, or sun exposure
What are extrinsic factors?
This refers to irregular split or brittle nails appearing as nail plate surface roughness; potentially caused by heredity, matrix injury, excessive exposure to cuticle removers, harsh cleaning agents, or aggressive filing techniques
What is onychorrhexis?
This is the method of temporarily straightening extremely curly hair by means of a heated iron or comb
What is pressing?
This is a stable, uniform mixture of two or more substances
What is a solution?
This acid–alkali neutralization reaction that neutralizes (deactivates) the alkaline residues left in the hair by a hydroxide relaxer and lowers the pH of the hair and scalp; hydroxide relaxer neutralization does not involve oxidation or rebuild disulfide bonds
What is hydroxide neutralization?
This is a condition characterized by hyperpigmentation in spots that are not elevated and is generally caused by cumulative sun exposure or aging and is similar to melasma
What is chloasma?
This is commonly known as an ingrown nail, where the nail grows into the living tissue around the nail
What is onychocryptosis?
This is the section of the pin curl between the base and first arc (turn) of the circle that gives the curl its direction and movement; the hair between the scalp and the first turn of the roller
What is the stem?
This is a substance that releases oxygen, such as hydrogen peroxide or sodium persulfate
What is an oxidizing agent?