Lesson 1Soothing and anti-inflammatory actives: panthenol, niacinamide, bisabolol for scalp tolerance and sensory benefitsHere we discuss calming and anti-inflammatory ingredients that help scalp ease in damaged hair routines. You will explore panthenol, niacinamide, bisabolol, and their effects on barrier work, redness, itch, and general feel.
Scalp barrier and swelling basicsPanthenol for moisture and calmingNiacinamide for barrier and rednessBisabolol and plant anti-irritantsFeel testing and user viewsBlend limits and matchingLesson 2Lipids, ceramides and fatty alcohols: replenishing the lipid mantle, repairing cuticle gaps, improving barrier functionThis part checks 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 makeup overviewCeramides and cuticle gap fillingCholesterol and 18-MEA renewalFatty alcohols as shaping softenersPorosity drop and strength boostsTeamwork with proteins and softenersLesson 3Proteins and peptides: hydrolyzed proteins, amino acids, keratin-derived peptides and mechanism of temporary repairThis part centres on proteins, peptides, and amino acids for short-term fix. You will learn how size, charge, and breakdown level affect entry, film build, strength, and balancing stiffness with softness.
Protein harm signs in hair strandsBroken-down proteins and size weightKeratin-based peptides and aimingFree amino acids and moisture boostFilm build, strength, and break riskAllergy, labels, and plant optionsLesson 4Oils and esters: vegetable vs synthetic esters, penetration vs surface lubricationThis part explores oils and esters that smooth, shield, and at times enter hair. You will compare natural oils and made esters, understand fat acid makeups, entry depth, and effects on frizz, shine, and breaks.
Cuticle smoothing and friction cutEntering vs surface oilsPlant oils and fat acid makeupsMade esters and feel tuningBlocking, shine, and frizz handlingSpoilage, oxidation, and blend steadinessLesson 5Surfactants and mild cleansing systems: sulfate vs sulfate-free (anionic, amphoteric, nonionic) and impact on damaged hairThis part breaks down surfactant setups for cleaning damaged hair with least extra harm. You will compare sulfates and sulfate-free mixes, look at anionic, amphoteric, and nonionic parts, and plan gentler but strong systems.
Surfactant kinds and bubble buildSulfate surfactants and harm chanceAmphoteric and nonionic gentleness addsCoacervates and softening during washBubble quality vs kindness balanceScalp tolerance and rinse tuningLesson 6Silicones and film-formers: volatile vs non-volatile silicones, PVP/VA, dimethicone — shine, smoothness, and protectionThis part covers silicones and film-makers that form shielding, smoothing layers on hair. You will compare quick-dry and lasting silicones, PVP/VA and acrylics, and learn film effects on shine, frizz, heat shield, and build-up.
Quick vs lasting siliconesDimethicone types and thickness pickAmino silicones and stickingPVP/VA and acrylic film traitsHeat, UV, and pull protection partsHandling build-up and silicone-free tagsLesson 7Humectants and moisturizers: glycerin, propylene glycol, hyaluronic acid — water retention vs hygral fatigueHere we check humectants and moisturizers that handle hair water levels. You will compare glycerin, glycols, and hyaluronic acid, grasp water holding vs swelling tiredness, and learn how weather and porosity guide levels.
Water in hair strand buildGlycerin and usual polyol humectantsPropylene glycol and kin glycolsHyaluronic acid weight and film waysSwelling tiredness and controlWeather, porosity, and use guidesLesson 8Preservatives, chelators, pH adjusters and antioxidants: ensuring stability and preventing further oxidative damageThis part details support ingredients that guard blends and hair from breakdown. You will learn how preservatives, chelators, pH tuners, and antioxidants keep germ safety, steadiness, and limit more oxidation harm.
Germ risks in damaged-hair blendsPreservative setups and rule limitsChelators, hard water, and metal-led harmpH tuners and cuticle wholenessAntioxidants vs oxidation stressSteadiness testing and pack choicesLesson 9Cationic conditioners and polymers: quaternized cellulose, polyquaterniums — adsorption, deposition, and slipHere we explore positive charge conditioners and polymers that stick to damaged hair. You will study charge thickness, sticking power, build-up, and how quats and polyquats affect comb ease, slip, volume, and long feel.
Positive charge and damaged hair stickingQuaternized cellulose build and workMain polyquaterniums and work profilesSticking, placing, and rinse waysSlip, comb ease, and feel checksBuild-up control and clear strategiesLesson 10Bond-rebuilding chemistries: bis-aminopropyl diglycol dimaleate, polyfunctional crosslinkers and how they restore disulfide/peptide interactionsThis part explains bond-rebuild chemistries that aim at broken disulfide and peptide ties. You will learn key molecules, reaction paths, real fix limits, and formulating without upsetting other actives.
Hair harm and disulfide breakBis-aminopropyl diglycol dimaleate wayMulti-link makers and net thicknessPeptide chain ties and limitsBlend matching and steadinessSafety, irritation, and market tags
