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 comfort in damaged hair care. You will explore panthenol, niacinamide, bisabolol, and their effects on barrier strength, redness, itch, and overall feel.
Scalp barrier and swelling basicsPanthenol for moisture and calmNiacinamide for barrier and red reduceBisabolol and plant anti-irritantsFeel testing and user viewsBlend limits and match upsLesson 2Lipids, ceramides and fatty alcohols: replenishing the lipid mantle, repairing cuticle gaps, improving barrier functionThis section reviews lipids, ceramides, and fatty alcohols that strengthen the hair lipid shield. You will learn how they seal cuticle gaps, lower porosity, smooth texture, and build resistance to mechanical and chemical strain over time.
Hair lipid layer make-up overviewCeramides and cuticle gap sealCholesterol and 18-MEA renewFatty alcohols as build emollientsPorosity cut and strength boostsTeam work with proteins and rinsesLesson 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 repair. You will see how size, charge, and break-down level affect entry, film build, strength, and balancing firmness with softness in hair.
Protein harm signs in hair fibresBroken proteins and weight measuresKeratin-based peptides and aimFree amino acids and moisture addFilm build, strength, and crisp riskAllergy, labels, and plant optionsLesson 4Oils and esters: vegetable vs synthetic esters, penetration vs surface lubricationThis section covers 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 effects on frizz, shine, and breaks.
Cuticle smooth and friction dropEntering vs top oilsPlant oils and fatty acid listsMade esters and feel adjustBlock, shine, and frizz holdSpoil, oxidise, and blend steadyLesson 5Surfactants and mild cleansing systems: sulfate vs sulfate-free (anionic, amphoteric, nonionic) and impact on damaged hairThis section checks surfactant setups for cleaning damaged hair with least extra harm. You will compare sulfates and no-sulfate mixes, look at anionic, amphoteric, nonionic parts, and plan gentler effective systems.
Surfactant kinds and bubble formSulfate cleaners and harm chanceAmphoteric and nonionic gentle addsClumps and condition in washBubble quality vs soft balanceScalp accept and rinse bestLesson 6Silicones and film-formers: volatile vs non-volatile silicones, PVP/VA, dimethicone — shine, smoothness, and protectionThis section handles silicones and film-makers that form guard, smooth layers on hair. You will compare quick-dry and lasting silicones, PVP/VA and acrylics, and see film effects on shine, frizz, heat guard, and build-up.
Quick vs lasting siliconesDimethicone types and thick pickAmino silicones and stickPVP/VA and acrylic film traitsHeat, UV, and force guard jobsBuild-up handle and no-silicone tagsLesson 7Humectants and moisturizers: glycerin, propylene glycol, hyaluronic acid — water retention vs hygral fatigueHere we check humectants and moisturisers that control hair water levels. You will compare glycerin, glycols, hyaluronic acid, grasp water hold vs fatigue from moisture, and how weather and porosity set humectant amounts.
Water in hair fibre buildGlycerin and old polyol pullsPropylene glycol and kin glycolsHyaluronic acid weight and film actMoisture fatigue and swell controlWeather, porosity, and use guidesLesson 8Preservatives, chelators, pH adjusters and antioxidants: ensuring stability and preventing further oxidative damageThis section outlines support ingredients that shield 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 goodsPreserve setups and rule limitsChelators, hard water, metal harmpH tuners and cuticle healthAntioxidants vs oxidation stressSteady tests and pack choicesLesson 9Cationic conditioners and polymers: quaternized cellulose, polyquaterniums — adsorption, deposition, and slipHere we look at positive charge conditioners and polymers that stick to damaged hair. You will study charge strength, stick power, build-up, and how quats and polyquats affect comb ease, slip, volume, and lasting feel.
Positive charge and damaged hair stickQuat cellulose build and jobMain polyquats and perform listsStick, deposit, and rinse actSlip, comb ease, and feel checkBuild control and clear methodsLesson 10Bond-rebuilding chemistries: bis-aminopropyl diglycol dimaleate, polyfunctional crosslinkers and how they restore disulfide/peptide interactionsThis section explains bond-rebuild mixes that target broken disulfide and peptide ties. You will learn main molecules, reaction paths, real repair bounds, and how to blend them without upsetting other actives in the mix.
Hair harm and disulfide breaksBis-aminopropyl diglycol dimaleate wayMulti-link crossers and net strengthPeptide chain ties and boundsBlend match and steadySafe, irritate, and market tags
