PSI Cosmetology Theory Exam 2023 Questions and Answers 100% Verified

PSI Cosmetology Theory Exam 2023 Questions and Answers 100% Verified PSI Cosmetology Theory Exam 2023 Questions and Answers 100% Verified Soft Water/ Rain water Best for shampooing and allows shampoo to lather freely Hard Water Minerals that lessen the ability of the shampoo to lather Purified water/Deionized water Main ingredient in shampoo Surfactant has two ends the HYDROPHILIC HEAD and LIPOPHILIC TAIL Hydrophilic Head Attracted to water Lipophilic Tail Attracted to dirts and oils Acid Balanced Shampoo pH of 4.5-5.5 Jheri Redding first to introduce pH balanced shampoo in the 1960s Clarifying Shampoo acidic base to cut through buildup on the hair strand Humectants Most conditioners carry this. Promote retention of moisture Instant conditioners remain on the hair 1-5 minutes Protein Conditoners brown liquids and penetrate into the cortex to temporarily improve porosity and increase elasticity Infraed Lamps may be used with hair treatments and scalp tonics for 5 minutes High Frequency Unit used to normalize oily scalp conditioners! Also never should be used with tonics