What is a single-process color service?
a.Two complete color applications on different days
b.One application of color that lifts and deposits in the same step
c.Color and perm performed together in one chair
d.Lightener applied, rinsed, then a separate toner applied as step two
Explanation
Single-process color uses one application of a permanent or demi-permanent color that lifts (where the developer allows) and deposits pigment at the same time. Double-process is two separate steps, typically pre-lightening with bleach followed by a toner or color formula.
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