The Blend

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					  The Blend

Vickie L Mickey, CT
            The Blend Method
• A technique or method that applying DC (
  galvanic) and AC (high frequency) through a
  probe or filament that is inserted in to the hair
• Method developed by Arthur Hinkle and Henri
  St. Pierre in 1938
• Hinkle patented the technique in 1948
• Blend has become the most popular
  technique for permanent hair removal
            What is the Blend?
• Blend is the application of two different types of
  current applied simultaneously
• DC produces a chemical, AC accelerates the
  chemical action, producing significantly more lye
• 3-4 times more than in the a shorter amount of
• Permeability of the lye to the surrounding tissue
  is 6 times more caustic than at the normal body
        Types of Blend Epilators
Manual Blend is when the timing, stop, and start of
  the current application is controlled by the
Both currents are applied to the tissue with the
  application of two foot pedals
Versatility is individualized
Disadvantage is that this that this method may be
  inaccurate by timing and intensity
Two foot pedals for a long period of time may be
  uncomfortable to the electrologist
        Types of Blend Epilators
• Semiautomatic blend epilators come with
  optional sue of single foot pedal, two foot pedals,
  or none at all
• Many machines have a variety of timing and
  intensity, with pulsing and spacing and hair
• Timing and intensity can be preset to increase the
  current flow after the set time, allowing
• Once working point is established, less
  concentration is required
      Automatic Blend Epilators
• Timing and intensity is controlled entirely by
  the machine
• Calculations consistently applied the
  appropriate timing and intensity of the
  blended current
• Some feature a galvanic after count
• Disadvantages is fewer options to make
  adjustments for individual hairs
    Indications & Contraindications
•   Works for a significant number of hairs
•   Works well on curly hairs with curved follicles
•   Preferred for anagen and high telogen hairs
•   Contraindications are: use of galvanic current
    on patient with certain conditions
                   Pros & Cons
• Pros of blend are:
• Effective on a wide range of hairs on all body parts
• Blend allows for the effectiveness of the DC with less
  treatment times with the AC added
• Blend allows for the longer usage of the AC without
  damage to tissue
• Cons of blend are:
• More difficult to learn or master
• Damage from high-frequency blowout
• Gas blowout
         Variables of the Blend
• Parameters for face and body should be at
  patients comfort level
• Face technique – use on face are to ensure
  effective treatment with minimum adverse
• Adverse reactions can be eschars, blanching,
  pitting and dimpling of skin due to over
• Avoid by following manufactures guidelines
• Face technique require more high frequency as it
  is the master current in this application
         Variables of the Blend
• Facial Blend-method is to apply high frequency
  current to heat follicle
• Goal is to heat cease high frequency before the
  heating pattern rises to the skin surface
• Rule of thumb – apply a moderate amount of HF
  for 6-20 seconds
• Do not epilate a hair with HF for less than 6
• Slower, shorter treatments. Over longer periods
  reduce risk of over treating delicate
                Body Technique
• Body work requires working faster, with safe effective
  treatment, for longer sessions
• Areas of concern are the bikini line and shinbones are
  prone to eschars
• Blend is very effective at elimating hair permanently
• Use higher intensity on the HF for 1-2 seconds with
  simultaneous applications of DC in bursts, gradually
  increasing to increase more effective treatment
• Have patient shave 2 days prior to treatment to
  remove excess hair, saving time
          Calculating Formulas
• Different schools of thought on calculating
  formulas are: minimum intensity of HF,
  required for hair, referring to Hinkle’s Units of
  Lye Chart for the units of required, use only ¼
  of the lye needed to destroy hair
• Single unit of lye is 1/10 of 1 ma for 1 second
  =1 unit of lye
• 5/10 of 1 ma for 1 second = units of lye

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