2 Connect ActivityTo previous unit 102Fruit Machine or words
3 Aims and OutcomesIntroduce the learners to the hair structure, the main hair conditions and what shampoo does to the hair and scalp.Learners outcomesIllustrate understanding by creating a model of the hair structure (LO3)Identify the main hair conditions (LO1)Explain what shampoo does to the hair and scalp (LO2)Describe what conditioner does to the hair and scalp (LO1)
4 Structure of the Hair Think of each hair as being like a pencil The paint on the outsideThe wood is the main partThe lead that runs through the middle
6 Structure of the hair The hair is made up of 3 main parts The Cuticle The CortexThe Medulla
7 The Cuticle This is the outer layer of the hair Cuticle scales are like roof slates orfish scalesThey overlap down the hair shaftThey are translucent so you can seethe hair colour underneath themHair in good condition has very tightly closed cuticlesHair in bad condition has open, damaged cuticles
8 The Cortex This is the inner part of the hair This is where any changes to the hair take placeIf we blow dry or straighten hair it is this part that changesIf we colour or perm our hair it is this part that changesWe can damage the cortex if we use harsh chemicalsIf the cortex is damaged the hair will have high elasticity (stretch and snap)Try stretching your hair to determine if it damaged.
9 The Medulla This is the central layer of the hair It is simply made up of air spacesIt has no real purposeIt is not always present in fine hair
10 Main Hair Conditions Normal (no problems, fruit based) Greasy (a lot of natural sebum is produced, lemon)Dry (not enough natural sebum is produced, oil)Chemically Damaged (over use of harsh chemicals, protein)
11 What Does Shampoo do to the Hair & Scalp? Shampoo contains detergent moleculesShampoo mixes easily with waterThis allows the grease and dirt to be caught up in the lather and rinsed awayShampoo cleans the hair & scalp getting it ready for the next service
12 What Does Conditioner do to the Hair? Surface conditionersCoat the hair shaftsmooth down the cuticlePenetrating Treatment ConditionersStrengthen the cortexReplace moisture
13 The Hair Shaft TaskCreate a model of the hair shaft using the materials provided. Brief description of the three main parts.PlanRemember your pencil?
14 Recall Name the outer layer of the hair? Name the inner layer of the hair?Name the innermost part of the hair?Is the cuticle see through?Name 1 type of chemical damage?Name 1 piece of electrical equipment that may damage the hair?Describe what the cuticle looks like?If the cuticle is smooth and closed would you expect the hair to be healthy?Why would you think of a pencil?Can you predict which part of the hair will become damaged with bleach?Can you see through the cuticle?
15 Review of LearningOn the wipe board write down three key words you have learnedOr three things you have learned