Skincare

Before you begin, this unit teaches Skin barrier function, Gentle cleansing, Moisturizer roles, Sun protection basics, Introduce one change. The lessons introduce ideas in order, then the unit quiz asks you to retrieve and apply them. You may revisit completed lessons whenever you wish.

Before you begin, this unit teaches Read an ingredient list, Irritation and allergy, Cosmetic and medical claims, Routine consistency, Professional boundaries. The lessons introduce ideas in order, then the unit quiz asks you to retrieve and apply them. You may revisit completed lessons whenever you wish.

Before you begin, this unit teaches Exfoliation and tolerance, Acne mechanisms, Retinoid literacy, Post-inflammatory marks, Patch testing limits. The lessons introduce ideas in order, then the unit quiz asks you to retrieve and apply them. You may revisit completed lessons whenever you wish.

Before you begin, this unit teaches Formulation matters, Sanitation and contamination, Evaluate before-and-after images, Inclusive skin observation, Routine audit. The lessons introduce ideas in order, then the unit quiz asks you to retrieve and apply them. You may revisit completed lessons whenever you wish.

Before you begin, this unit teaches Audit a product claim without mistaking registration for approval, Translate sunscreen claims into an exposure plan, Design a tolerance trial with honest stopping rules, Audit cumulative dryness without adding another active, Triage a new reaction before investigating its cause. The lessons introduce ideas in order, then the unit quiz asks you to retrieve and apply them. You may revisit completed lessons whenever you wish.

Before you begin, this unit teaches Separate active acne, residual marks, and procedural risk, Reconcile skincare with pregnancy and existing treatment, Assess storage and contamination without a smell-only test, Document a changing spot for assessment, not cosmetic removal, Defend a minimal routine and an adverse-event handoff. The lessons introduce ideas in order, then the unit quiz asks you to retrieve and apply them. You may revisit completed lessons whenever you wish.

Before you begin, this unit teaches The stratum corneum as a brick-and-mortar composite, and what the structure predicts, Over-cleansing: how surfactants strip the lipid mortar, and why tightness is a warning, Humectants: what water-binding actually means, and the ambient-humidity caveat, Emollients and occlusives: filling gaps in the mortar versus forming a film, Sensitisation, irritation, and patch testing: why a breached barrier admits allergens. The lessons introduce ideas in order, then the unit quiz asks you to retrieve and apply them. You may revisit completed lessons whenever you wish.

Before you begin, this unit teaches UVB and UVA: different wavelengths, different depths, different damage, SPF, broad spectrum, and quantity: reading protective numbers and applying the tested dose, Acne as a follicular process, and why drying it out backfires, Hyperpigmentation: how melanin gets deposited, and why the marks are stubborn, Retinoids: the irritation curve, titrating exposure, and reading a retinol claim sceptically. The lessons introduce ideas in order, then the unit quiz asks you to retrieve and apply them. You may revisit completed lessons whenever you wish.

Before you begin, this unit teaches Stable before ambitious: the four jobs a routine has to do, and why additions come last, One change at a time: attribution logic, washout, and how to read a reaction honestly, Niacinamide, azelaic acid, and vitamin C: what the evidence supports, and what it does not, Exfoliation types and why more is not better: mechanical, chemical, and the biology of shedding, Barrier repair after over-use: a subtraction protocol and an honest recovery timeline. The lessons introduce ideas in order, then the unit quiz asks you to retrieve and apply them. You may revisit completed lessons whenever you wish.

Before you begin, this unit teaches Scars and marks are not the same tissue: distinguishing redness, pigment, and textural change, Scalp and hair: the same barrier with different exposure, and why hair damage is mostly cumulative, Body and hand care for dry or reactive skin: dose, wet work, and site-specific vehicles, Sun protection for ordinary days: incidental exposure, missed surfaces, and habits that beat intensity, Capstone: auditing one label and one claim with the whole toolkit. The lessons introduce ideas in order, then the unit quiz asks you to retrieve and apply them. You may revisit completed lessons whenever you wish.

Before you begin, this unit teaches What actually changes with age, and which claims change differently, Hormonal context: cycle, pregnancy and perimenopause without the 'hormone-balancing' marketing, Skin of colour: why pigment, scarring and the sunscreen question run differently, When your hands and the outdoors are your workplace: dose, wet work and sunlight on shift, Cold, dry, humid and hot: what actually changes when the climate does, and what changes in the routine. The lessons introduce ideas in order, then the unit quiz asks you to retrieve and apply them. You may revisit completed lessons whenever you wish.

Before you begin, this unit teaches Sensitive and reactive skin: practical guidance without reaching for a diagnosis, When a cosmetic routine is masking a medical problem: suppression, misattribution and delay, Reading an ingredient list in order: what the law fixes, and where the information stops, 'Clinically proven': how to audit a product's claims about its own testing, Capstone: one constraint set, one minimal routine, and the arithmetic that proves it fits. The lessons introduce ideas in order, then the unit quiz asks you to retrieve and apply them. You may revisit completed lessons whenever you wish.