Lesson 1Soothing and anti-inflammatory actives: panthenol, niacinamide, bisabolol for scalp tolerance and sensory benefitsHere we discuss calming and anti-inflammatory items that aid scalp ease in damaged hair care. You will examine panthenol, niacinamide, bisabolol, and their effects on barrier work, redness, itch, and overall feel sense.
Scalp barrier and swelling basicsPanthenol for moisture and calmingNiacinamide for barrier and rednessBisabolol and plant anti-irritantsFeel testing and user senseBlend limits and matchLesson 2Lipids, ceramides and fatty alcohols: replenishing the lipid mantle, repairing cuticle gaps, improving barrier functionThis section studies lipids, ceramides, and fatty alcohols that strengthen the hair lipid shield. You will learn how they fill cuticle gaps, lower porosity, boost smoothness, and aid long-term resistance to pull and chemical stress.
Hair lipid layer make-up overviewCeramides and cuticle gap fillingCholesterol and 18-MEA renewalFatty alcohols as build emollientsPorosity drop and strength gainsTeamwork with proteins and conditionersLesson 3Proteins and peptides: hydrolyzed proteins, amino acids, keratin-derived peptides and mechanism of temporary repairThis section centres on proteins, peptides, and amino acids for short-term fixing. You will learn how size, charge, and break-down level affect entry, film build, strength, and balancing stiffness with softness.
Protein harm signs in hair fibresBroken-down proteins and weight sizeKeratin-based peptides and aimFree amino acids and moistureFilm build, strength, and break riskAllergy, labels, and plant choicesLesson 4Oils and esters: vegetable vs synthetic esters, penetration vs surface lubricationThis section explores oils and esters that smooth, guard, and at times enter hair. You will compare natural oils and made esters, grasp fatty acid make-ups, entry depth, and their role in frizz, shine, and breaks.
Cuticle smoothing and friction cutEntering vs surface oilsPlant oils and fatty acid make-upsMade esters and feel tuningBlock, shine, and frizz holdSpoil, oxidation, and blend steadyLesson 5Surfactants and mild cleansing systems: sulfate vs sulfate-free (anionic, amphoteric, nonionic) and impact on damaged hairThis section reviews surfactant setups for cleaning damaged hair with little extra harm. You will compare sulfates and sulfate-free mixes, look at anionic, amphoteric, and nonionic parts, and plan milder but strong systems.
Surfactant kinds and bubble formSulfate surfactants and harm chanceAmphoteric and nonionic mild boostersClumps and conditioning in washBubble quality vs gentle balanceScalp ease and rinse tuneLesson 6Silicones and film-formers: volatile vs non-volatile silicones, PVP/VA, dimethicone — shine, smoothness, and protectionThis section covers silicones and film-makers that form guarding, smoothing layers on hair. You will compare quick-dry and lasting silicones, PVP/VA and acrylics, and see how films impact shine, frizz, heat guard, and build-up.
Quick vs lasting siliconesDimethicone types and thickness pickAmino silicones and placementPVP/VA and acrylic film traitsHeat, sun, and pull guard rolesBuild-up handle and silicone-free claimsLesson 7Humectants and moisturizers: glycerin, propylene glycol, hyaluronic acid — water retention vs hygral fatigueHere we study humectants and moisturizers that handle hair water levels. You will compare glycerin, glycols, and hyaluronic acid, grasp water hold vs moisture tiredness, and learn how weather and porosity guide humectant amounts.
Water in hair fibre buildGlycerin and old polyol humectantsPropylene glycol and kin glycolsHyaluronic acid weight and film actMoisture tiredness and swell controlWeather, porosity, and use guidesLesson 8Preservatives, chelators, pH adjusters and antioxidants: ensuring stability and preventing further oxidative damageThis section outlines support items that guard blends and hair from break-down. You will learn how preservatives, chelators, pH tuners, and antioxidants keep germ safety, steady, and limit more oxidation harm.
Germ risks in damaged-hair itemsPreservative setups and rule limitsChelators, hard water, and metal-led harmpH tuners and cuticle wholenessAntioxidants vs oxidation stressSteady testing and pack choicesLesson 9Cationic conditioners and polymers: quaternized cellulose, polyquaterniums — adsorption, deposition, and slipHere we explore positive conditioners and polymers that stick to damaged hair. You will study charge strength, sticking power, build-up, and how quats and polyquats affect comb ease, slip, volume, and long-term hair feel.
Positive charge and damaged hair stickQuaternized cellulose build and workMain polyquaterniums and act profilesStick, placement, and rinse actSlip, comb ease, and feel checkBuild-up control and clear strategiesLesson 10Bond-rebuilding chemistries: bis-aminopropyl diglycol dimaleate, polyfunctional crosslinkers and how they restore disulfide/peptide interactionsThis section explains bond-fixing chemistries that aim at broken disulfide and peptide ties. You will learn key items, their reaction paths, real fix limits, and how to blend them without upsetting other actives.
Hair harm and disulfide breakBis-aminopropyl diglycol dimaleate wayMulti-link makers and net densityPeptide chain ties and limitsBlend match and steadySafety, irritation, and market claims
