Lesson 1pH adjustment and chelating agents: EDTA/GLDA roles and recommended levelsLook at pH control and chelators in hair care. See how acids, bases, buffers set pH, and EDTA, GLDA bind metals, boost preservative action, and guard hair colour and stability in humid conditions.
Target pH ranges for key hair product typesAcids, bases and buffer systems in formulasChelation chemistry and metal ion controlEDTA, GLDA and emerging chelatorsRecommended use levels and compatibilityLesson 2Rheology modifiers, thickeners and texture agents: carbomers, xanthan gum, hydroxyethylcellulose, associative thickenersKnow rheology modifiers and texture agents for viscosity and touch. Compare carbomers, xanthan, cellulose types, associative ones, and how salts, pH, surfactants change their action in Indian water qualities.
Viscosity, yield stress and sensorial impactCarbomers and neutralization requirementsXanthan and cellulose gums in surfactant systemsAssociative thickeners and micelle interactionTroubleshooting instability and phase separationLesson 3Proteins, peptides and keratin derivatives: roles, molecular weight effects and compatibilityProbe proteins, peptides, keratin variants in hair care. Learn molecular size, charge, changes affect entry, film build, feel, match with cleansers, conditioners, styling agents.
Protein sources and hydrolysis processesMolecular weight and hair penetrationCationic vs anionic protein derivativesKeratin analogs and bond-mimicking claimsCompatibility with surfactants and cationicsLesson 4Conditioning agents: cationic surfactants, silicones, quaternary ammoniums, polyquaterniums — mechanisms and INCI namesExplore conditioners for smoothness, softness, handling. Compare cationics, silicones, quats, polyquats, their hair action, INCI terms, build-up risk, tips for lighter blends in daily routines.
Cationic surfactants and lamellar structuresSilicone types, volatility and depositionQuats, polyquats and charge density effectsINCI naming conventions for conditionersBalancing conditioning, buildup and rinseabilityLesson 5Surfactants: anionic, amphoteric, nonionic — selection, mildness, foaming and concentration rangesStudy surfactant types for cleansing and conditioning. Compare anionics, amphoterics, nonionics for gentleness, lather, conditioning, design blends and levels for shampoos, co-washes in varied water.
Anionic surfactants and cleansing strengthAmphoteric surfactants and mildness boostingNonionic surfactants and solubilization rolesDesigning surfactant blends for shampoosActive matter, dilution and usage rangesLesson 6Emollients and oils: esters, fatty alcohols, natural oils and butters — polarity, spreadability and compatibilityExplore emollient chemistry, comparing esters, fatty alcohols, natural oils, butters. See polarity, spread, match affect smoothness, build-up, stability across formats for humid climates.
Ester structure, polarity and sensory profileFatty alcohols for structure, slip and stabilityNatural oils, butters and fatty acid profilesPolarity, solubility and phase compatibilityChoosing emollients for product type and hair needLesson 7Functional actives and botanicals: antioxidants, UV filters, anti-dandruff actives, anti-inflammatory extracts — efficacy and evidenceAnalyse actives and plant extracts for scalp and hair gains. Cover antioxidants, UV blocks, anti-dandruff, anti-swelling extracts, stress mechanisms, proof quality, real claim backing.
Antioxidants and protection from oxidative stressUV filters for hair color and scalp defenseAnti-dandruff actives and regulatory statusBotanical extracts and anti-inflammatory claimsEvaluating evidence and building claim dossiersLesson 8Fragrance, colorants and sensitisers: common allergens, limits and safer alternativesReview scents, colours, sensitisers in hair items. Spot common irritants, label rules, limits, strategies for safe, low-risk scent and colour that meet consumer likes.
Fragrance chemistry and allergen sourcesIFRA, labeling and allergen disclosureColorant types and regulatory categoriesSensitization mechanisms and risk factorsDesigning lower-risk scent and color systemsLesson 9Preservative systems: broad-spectrum options, typical concentrations, selection by pH and rinse-off vs leave-inLearn preservatives guard against germs. Compare full-range options, levels, pH fit, rules, adapt for rinse-off, leave-on, sensitive scalp in warm storage.
Microbial risks in hair formulationsCommon preservative chemistries and modespH-dependent efficacy and stabilityDesigning systems for rinse-off vs leave-inRegulatory, safety and consumer concernsLesson 10Humectants and film-formers: glycerin, propanediol, panthenol, polymers — what they do and recommended levelsKnow humectants, film-formers for moisture, feel. Compare glycerin, propanediol, panthenol, polymers, water hold, levels, impact on frizz, curl hold, build-up.
Water activity, humectancy and hair hydrationGlycerin, propanediol and other small humectantsPanthenol and multifunctional moisturizersFilm-forming polymers for hold and frizz controlUsage levels and climate-dependent strategies
