Chemical Texture Services Flashcards

What is the significance of hair porosity in selecting a perm solution?

Answer: Highly porous hair requires a milder solution and shorter processing time; resistant hair needs a stronger formula

Hair porosity directly affects how quickly and deeply perm solution penetrates the cortex. Highly porous hair absorbs chemicals rapidly and needs a gentler formula with reduced processing time. Resistant, low-porosity hair needs a stronger formula.

What is the recommended action if a test curl shows insufficient curl development?

Answer: Continue processing and recheck at regular intervals until the desired curl is achieved

If the test curl shows insufficient development, the perm solution should continue processing. The stylist should recheck at regular intervals (every 3-5 minutes) until the desired curl development is observed, being careful not to over-process.

What is the role of reducing agents in perm chemistry?

Answer: They break disulfide bonds by adding hydrogen atoms through a reduction reaction

Reducing agents (like ammonium thioglycolate) break disulfide bonds by adding hydrogen atoms to the sulfur. This chemical reduction cleaves the bond, allowing the hair to be reshaped around the perm rod.

Why should a client avoid washing their hair for 24-48 hours after a perm?

Answer: The neutralization process continues to stabilize the new bonds, and washing too soon can weaken the curl

After a perm, the newly reformed disulfide bonds are still stabilizing. Washing too soon can disrupt this process, weaken the bonds, and result in a looser curl or loss of wave pattern. The 24-48 hour wait allows full bond stabilization.

What is a body wave?

Answer: A perm using large rods to create loose, soft waves and added volume rather than defined curls

A body wave is a permanent wave performed using large-diameter rods to create soft, loose waves, body, and volume rather than tightly defined curls. It adds movement and fullness to hair that may otherwise be flat or limp.

What is the purpose of blotting the hair with towels before applying neutralizer?

Answer: To remove excess perm solution and water so the neutralizer can work effectively without being diluted

Blotting removes excess water and residual perm solution from the rods before neutralizer application. This prevents dilution of the neutralizer, ensuring it can effectively reform the disulfide bonds at full strength.