The high-frequency oscillating current passes through a device that allows for the selection of a ___ current:

The high-frequency current can produce a frequency of 60,000 to ___ hertz, depending on how it is regulated:

Frequency indicates the repetition of the current per:

Because __ current is capable of changing polarity thousands of times per second, it basically has no polarity and in effect does not produce chemical changes:

Product penetration is __ with high-frequency current:

Product penetration is achieved by using:

The rapid oscillation created by the high-frequency machine vibrates water molecules into the skin. This can produce a mild to strong __ effect:

An example of a stronger heat reaction is seen in thermolysis, which is used for electrolysis (permanent hair removal)

Let the client know that the high-frequency machine creates noise, and the ozone has a distinctive smell

During the manufacturing process, most of the air is removed from high-frequency machine electrodes, creating a vacuum in the tube. The air is replaced mainly with:

As electricity passes through high-frequency electrodes, they form visible shades of light. ___ produces a pink, orange, or red light:

This type of high-frequency electrode is typically used for sensitive skin and aging skin:

As electricity passes through high-frequency electrodes, they form visible shades of light. ___ (or rarified gas) produces blue or violet light:

This type of high-frequency electrode is typically used for normal-to-oily skin and acne-prone skin:

Sometimes these lights are inaccurately called infrared or ultraviolet because of their colors; however, there are no infrared or ultraviolet rays in high-frequency:

High-frequency may be applied after extractions or used over a product but will not penetrate a product as __ would:

The high-frequency machine also creates ozone, which has a germicidal action on the skin

High-frequency machine:

High-frequency generates a warm feeling that has a relaxing effect on the skin

AKA sparking:

AKA indirect:

AKA high-frequency comb:

Indirect electrodes are used to stimulate the skin during massage. This treatment is ideal for sallow and aging skin:

Using both hands, perform a piano finger motion, gently tapping the skin. Move around in a systematic manner over the entire face:

Used to direct sparking to a specific area such as an acne lesion. It helps disinfect and heal the lesion. Sparking is visible and creates an interesting zapping noise:

It is mainly used in a scalp treatment:

Place an index finger on the glass electrode to ground it until it touches the client’s skin, then remove. Glide the electrode over the gauze in a circular motion:

LARGE MUSHROOM: Open a piece of cotton gauze and glide the electrode over it on the client’s face. This produces a small spray of sparks onto the skin. This treatment is ideal for:

Glide in circular motions:

Touch the electrode to the blemish for a few seconds and remove. Repeat this a few times:

High-frequency contraindication:

High-frequency contraindication:

HIGH-FREQUENCY: The client should have contact with metal – such as chair arms, jewelry, and metal bobby pins – during the treatment

HIGH-FREQUENCY: A client should avoid any contact with metal; a __ may occur if such contact is made:

HIGH-FREQUENCY: To avoid being burned, the client should avoid contact with metal during electrical machine treatments

HIGH-FREQUENCY: The aesthetician should ground their finger on the electrode prior to applying it to the client and prior to removing it from the client

HIGH-FREQUENCY: The electrode should be continuously moving at all times

HIGH-FREQUENCY: Do not use alcohol on electrodes

HIGH-FREQUENCY: Immerse electrodes directly in water for cleaning

HIGH-FREQUENCY: When cleaning, do not get the metal end wet. Dry with a clean towel and store in a non-airtight closed container

The high-frequency coil should be replaced after a few __ of use if it’s losing power: