Hair Anatomy Quiz: Structure and Composition

Hair Anatomy

• The cuticle is the outermost layer of the hair, providing protection
• The cortex is the middle layer, responsible for strength, color, and texture
• The medulla is the innermost layer of the hair shaft
• The hair shaft is the visible part of the hair that protrudes from the skin

Hair Composition

• Hair is made up of amino acids, protein, and molecular bonds

Types of Bonds

• Hydrogen bonds: temporary, weakest, and can be broken by water or heat
• Ionic (salt) bonds: temporary, stronger than hydrogen bonds, but can be weakened by pH changes
• Covalent (disulfide) bonds: permanent, strongest, but can be broken by harsh processes like bleaching or excessive heat-styling

Olaplex

• Olaplex rebuilds disulfide bonds with its patented ingredient, Bis-Aminopropyl diglycol dimaleate (Bis-Amino)
• Olaplex can be used on curly, chemically altered, and virgin hair
• Olaplex No.1 should be used in conjunction with Olaplex No.2, not the other way around

Using Olaplex Standalone In-Treatment

• Use the correct amount of Olaplex No.1 measured with a dosing dispenser
• Apply to clean, dry hair, or damp, towel-dried hair, and leave on for 5 minutes
• Apply Olaplex No.2 from root to end, and leave on for 10 minutes before rinsing
• Follow up with Olaplex No.4 Bond Maintenance Shampoo and Olaplex No.5 Bond Maintenance Conditioner

K18 Molecular Repair

• Engineered to reverse hair damage in 4 minutes and deliver lasting hair health
• K8 PEPTIDE PREP™ delivers cleaner, healthier hair after one wash
• Detox Shampoo removes 99% product buildup, 95% sebum, and 76% copper
• Ph Maintenance Shampoo has an optimized pH to reduce excess cuticle swelling and preserve color and health

Using K18 Professional Molecular Repair Hair Mask

• Apply 1-3 pumps starting at the ends and working up towards the roots
• Wait 4 minutes for the K18Peptide to take effect