Texture - Defined as the feel of each individual hair and whether it is fine, medium or coarse, Hygroscopic - The hairs ability to absorb moisture for the atmosphere into the cortex, Hazard - Anything with the potential to cause harm, Thinning - Reduces bulk from the hair without removing length, removes lines and creates a softer finish, Short Graduation - Hair held at 45 degree angles, shorter external layers with longer internal layers, Uniform Layer - Hair is held at 90 degrees, no weight line as the hair is distributed evenly throughout, Eumelanin - Black and brown colour pigments produced by melanin, when eumelanin is present in only small amounts, the hair may be blonde, Porosity test - Checks external strength of the cuticle, Anagen - The active growing stage, most of the hair is in this stage at one time, Bleaching products - Lifts the hair using an oxidising process, decolours the melanin leaving oxymelanin, Oxymelanin - Colourless pigment, PH of the hair and skin - 4.5-5.5, Pheomelanin - Yellow -red/brown colour pigments and the main pigment found among red hair clients, Temporary Colour - Large colour molecules that coat the hairs cuticle, Hydrophilic - Water loving head, Alpha Keratin - Hair in its natural state, Beta Keratin - Hair in its dried stretched state, Petrissage - Deep, kneeding movements to relax the client whilst stimulating the sebaceous glands and blood supply, Seborrhoea - Excessively oily scalp, Tinea Capitis (Ring Worm) - Circular bald patches of grey whitish skin surrounded by red rings, sometimes seen with broken hairs close to the skin, Folliculitis - Inflammation of the hair follicles, bacterial infection which can be caused by harsh physical or chemical reactions, Fragilitis Crinium - Dry, splitting hair ends, Incompatibility tests - Take a small cutting of hair, place in 20ml of 6% hydrogen peroxide and 1ml of perm solution, leave for up to 30 minutes, Permanent colour - Smaller molecules enter the hairs cortex, swell, enlarge and become trapped, can cover up to 100% white hair,

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