Chemical ServicesPregunta 81 de 100
A permanent wave (perm) changes the hair by:
a.Only wetting the hair
b.Removing pigment
c.Breaking and then reforming the disulfide bonds around a rod to create curl
d.Coating the cuticle with wax
Explicación
A perm uses a waving lotion to break disulfide bonds while the hair is wrapped on rods, then a neutralizer reforms the bonds in the new curled shape. The size of the rod determines the tightness of the curl.
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