Understanding Chemical Hair Treatments and Techniques

Curl re-forming is the process that alters the natural texture of the hair to create looser curls or waves. Relaxer is a service that straightens hair, perm is a treatment that creates curls, and straightening is a process that removes curl or wave from the hair.

The cortex is the middle layer of the hair shaft and is responsible for providing the strength and elasticity of the hair. The medulla is the innermost layer and is not involved in providing strength. The cuticle is the outermost layer that protects the hair. The follicle is the root of the hair.

The natural pH of hair falls within the range of 4.5 and 5.5. This slightly acidic pH is important for maintaining the overall health and strength of hair strands.

The size of the rod used in permanent waving determines the size of the curl. Different rod sizes produce different curl sizes.

Half off-base placement involves wrapping the hair at a 90-degree angle from its base section, creating a lifted effect with natural volume. On-base placement involves wrapping the hair directly on the base section, while off-base placement involves wrapping the hair below the base section. Over-directing technique involves moving the hair in the opposite direction of its natural fall to create tension and volume.

The correct answer is 'croquignole perm technique,' which involves wrapping the hair around the perm rod in a twisted manner that creates a tight, uniform curl. The incorrect answers do not accurately describe the process of wrapping hair around a perm rod and do not align with the standard techniques used in perming.

Cold waves typically have a higher pH level, ranging from 9.0 to 9.6, which makes them more alkaline in nature. The incorrect answers provided are not within the normal pH range of cold waves.

In acid wave processes, the neutralizer is a crucial component that helps to deactivate the waving solution and lock in the new wave pattern.

An endothermic wave requires an external source of heat to be activated, unlike internal chemical reactions, light exposure, or mechanical force.

Rinsing permanent wave solution from the hair for at least 5 minutes helps to ensure that all the chemicals are removed properly without causing damage to the hair or scalp.

Chemical hair relaxing is a hair treatment primarily for curly hair to make it straighter or smoother by altering the hair structure through the use of chemicals. The term 'hair straightening' is a more general term and can involve various methods beyond chemical relaxing. 'Hair smoothing' may refer to treatments that reduce frizz and create a smoother appearance. 'Curl reduction' is a specific term that focuses on reducing the intensity of curls without necessarily completely straightening the hair.

Thio relaxers, commonly used for hair relaxing, typically have a high alkaline pH above 10 to break down the disulfide bonds in the hair structure.

After a relaxer treatment, it is important to use an acid-balanced shampoo to help neutralize any remaining hydroxide ions in the hair, as these ions can cause damage if not properly neutralized.

Metal hydroxide relaxers contain only one component and do not require mixing before use. The other options mentioned require mixing of multiple components for proper application.

Lithium hydroxide and potassium hydroxide relaxers are typically marketed as 'no mix-no lye relaxers', highlighting their formulation without lye and the convenience of not requiring mixing before application.

Salt bonds, also known as ionic bonds, are the result of an attraction between negative and positive electrical charges. Hydrogen bonds are stronger than salt bonds and form between hydrogen and electronegative atoms. Covalent bonds involve the sharing of electrons between atoms.

Loop rods are also referred to as circle rods due to their circular shape, making them an essential tool in construction and welding.

For on-base placement in hair styling, the correct angle for wrapping the hair beyond perpendicular to its base section is typically 45 degrees. This angle ensures proper curl formation and placement on the rod.

Chemical solutions typically raise the pH of the hair to an alkaline state in order to manipulate the structure of the hair shaft.

Performing an elasticity test before perming the hair is important to assess the hair's ability to stretch and return to its original state. This helps prevent potential damage during the perming process.

Porous hair is more likely to absorb the chemicals in a highly alkaline permanent waving solution, leading to potential damage.

GMTG is a reducing agent commonly used in acid waves, which indicates that it has a low pH to help in the reduction process. A high pH, no pH, or a neutral pH would not be suitable for effective reduction.

Ammonia-free waves are preferred for their mild scent, making them a more pleasant option for those sensitive to strong odors.

The correct answer is 5 to 10 minutes because this is the typical processing time required for the chemicals in a permanent waving solution to break and reform the disulfide bonds in the hair. Extending the processing time beyond this range can result in over-processing or damage to the hair, while reducing the processing time may lead to ineffective curl formation.

Safety precautions when performing a permanent wave are crucial to prevent any adverse reactions or damage to the client's hair and scalp. One of the key steps is examining the scalp beforehand for any signs of irritation or sensitivity.

When hair is extremely curly, the twists are generally thin and fragile, making them the thinnest and weakest compared to other types of hair textures.

Relaxers are chemical products that are extremely alkaline in nature, which is why it is important to follow the instructions carefully to avoid damaging the hair.

In a reduction reaction, oxygen is typically removed or hydrogen is added to a compound. Nitrogen, carbon, and sulfur are not typically involved in reduction reactions.

Acid-balanced waves are a type of permanent wave that processes at room temperature, making them a popular choice for hairstylists due to their ease of use and gentle nature on the hair. Exothermic waves, alkaline waves, and low pH waves all require additional heat to process, making them less convenient options for many stylists.

acid waves typically have a pH range between 4.5 and 7.0, which is considered acidic but not extremely low or high on the pH scale.