Active ingredients explained
Ceramides, ectoin, azelaic acid, vitamin C, peptides, chemical exfoliants and prebiotics, without the hype.
Keratosis pilaris: those little bumps on your arms
Why keratosis pilaris happens, how common it is, its link to dry skin and eczema, what actually helps (moisturizing, urea, lactic and salicylic acid) and what doesn’t.
Prebiotics and your skin’s microbiome
What the skin microbiome is, what “prebiotic”, “probiotic” and “postbiotic” mean on a label, what early studies show for eczema-prone skin, and what’s not known.
AHAs and BHAs: chemical exfoliants explained
How glycolic, lactic and salicylic acid exfoliate, which one suits which skin, why they make you sun-sensitive, how often to use them, and Canada’s rules on strength.
Shea butter: a rich emollient and the nut-allergy question
What shea butter is made of, what studies show for dry skin and eczema, why refined shea butter is considered low-risk for people with nut allergies, and how quality varies.
Zinc oxide: sunscreen filter and diaper-rash protector
Why zinc oxide shows up in both diaper creams and mineral sunscreens, what Health Canada allows in each, whether nano zinc oxide is safe, and why some formulas leave a white cast.
Peptides in skin care: small proteins, big promises
What peptides are, the three types found in creams (signal, carrier, neurotransmitter-inhibiting), why getting them into skin is hard, and what trials really show.
Urea in skin care: the humble moisturizer that also smooths
What urea does in your skin, why low strengths hydrate and higher strengths soften thick, scaly skin, the evidence for dry skin and eczema, why it can sting, and Canada’s 10 percent cosmetic limit.
Squalane: a skin-like oil and where it comes from
Squalene vs squalane, why one oxidizes and the other doesn’t, where cosmetic squalane comes from (sharks, olives, sugarcane), and what’s known about clogged pores.
Benzoyl peroxide: an old acne treatment that still works
How benzoyl peroxide kills acne bacteria without breeding resistance, what Health Canada allows, how to handle dryness and bleached towels, and what the benzene findings really mean.
Vitamin C in skin care: brightening, firming and the stability problem
What topical vitamin C does for skin, why pure L-ascorbic acid turns brown, how derivatives differ, what concentration and pH matter, and why it pairs with sunscreen.
Chemical vs physical exfoliation: acids, scrubs and brushes
How acids and scrubs remove dead skin in different ways, what the evidence says about scrub “microtears”, why Canada banned plastic microbeads, and how to choose if your skin is sensitive.
Allantoin: the soothing ingredient in so many balms
What allantoin is, why Health Canada lists it as a skin protectant, what the (thin) evidence shows for soothing and healing, and why it’s considered one of the safest ingredients around.
Salicylic acid for breakouts: what it can and can’t do
How salicylic acid works on clogged pores, how strong the acne evidence really is, what Health Canada’s acne monograph allows, and who should be careful with it.
Azelaic acid: the gentle multitasker for redness and breakouts
What azelaic acid is, how it calms breakouts, redness and dark marks, why it’s both a cosmetic and a prescription drug in Canada, and what the trials show.
Exfoliating your body: rough elbows, legs and backs
Why body skin behaves differently from your face, how lactic acid, urea and salicylic acid body products work, scrubs versus lotions, and how exfoliation fits with shaving and ingrown hairs.
Panthenol (pro-vitamin B5): a quiet helper for your skin barrier
What panthenol is, how it works as a humectant, what barrier and wound-care studies found, who funded them, and why a small number of people are allergic to it.
Retinol, retinal and adapalene: the retinoid family explained
How retinoids work on acne and aging skin, why retinol is a cosmetic while adapalene and tretinoin need a prescription in Canada, and how to handle irritation, sun and pregnancy.
Ectoin: a stress-protecting molecule from salt-loving microbes
What ectoin is, how a molecule from salt-lake bacteria ended up in moisturizers, what it does to water in your skin, and how strong the eczema evidence really is.
How often should you exfoliate? Signs you’re overdoing it
Why there’s no single right number, how skin type and product type change how often you should exfoliate, the signs of over-exfoliation, and how to let your skin recover.
Centella asiatica (cica): what the evidence really shows
What centella asiatica and madecassoside are, what wound-healing research found, whether “cica” creams calm sensitive skin, and how strong the evidence really is.
Hyaluronic acid: what it really does on your skin
How hyaluronic acid works as a humectant, what molecular weight changes, where the “1,000 times its weight” line falls short, and how to use it in a dry Canadian winter.
Ceramides: the barrier lipid everyone’s talking about
What ceramides are, why your skin makes less of them in eczema, with age and in winter, and what studies of ceramide moisturizers actually found.
Enzyme exfoliants: papain, bromelain and the “gentle peel” idea
What fruit enzymes like papain and bromelain do on skin, how thin the evidence is, why many enzyme products may be inactive, who might prefer them, and the allergy question.
Colloidal oatmeal: why oats soothe itchy skin
What colloidal oatmeal is, how Health Canada treats it as a skin protectant, what eczema trials found, and when oat products might not suit a baby with eczema.
Niacinamide: what the multitasking vitamin B3 really does
What niacinamide is, what trials show for the skin barrier, redness, oil, breakouts and dark spots, which concentrations were tested, and why it isn’t the vitamin that makes you flush.
Glycolic vs lactic acid: which gentle acid suits your skin?
How glycolic and lactic acid differ in size, depth, irritation and hydration, who each one suits, why percentage and pH both matter, and what Health Canada allows.