What is eucalyptus in skincare?
Eucalyptus oil is distilled from the leaves of eucalyptus trees, most commonly Eucalyptus globulus. Its dominant constituent is 1,8-cineole, also called eucalyptol, which produces both its sharp camphoraceous scent and its antimicrobial effect.
It is far better known in respiratory products than in skincare, and where it does appear in topicals it is usually at low concentrations for scent and a cooling sensation. Its antimicrobial and anti-inflammatory activity is documented but it is a potent essential oil.
What skin concerns does eucalyptus treat?
Its antiseptic properties make it useful in products for minor cuts, grazes and insect bites, and it appears in some formulations for cold sores, athlete’s foot and body acne.
For facial skincare the picture is less favourable. Eucalyptus is highly volatile and a recognised sensitiser, it can trigger rosacea flares, and near the eyes it causes stinging and irritation. It should never be used undiluted or ingested.
What ingredients are best paired with eucalyptus?
If used, dilute it heavily in a carrier oil such as olive, jojoba or sweet almond, and keep it to body applications rather than the face.
For the facial concerns eucalyptus is sometimes reached for – congestion, acne, inflammation – salicylic acid, niacinamide, azelaic acid and tea tree oil are better supported and far less likely to irritate. Patch test before any use. Take our Skin Quiz.
What is acne?
Acne vulgaris is a chronic inflammatory condition of the pilosebaceous unit – the hair follicle and its attached oil gland. It produces blackheads and whiteheads, inflamed papules and pustules, and in severe cases deep nodules and cysts.
It is the most common skin condition worldwide, and it is not a hygiene problem. Acne begins with a microcomedone forming invisibly inside the follicle, weeks before anything shows on the surface.
What causes acne?
Four mechanisms work together: excess sebum driven by androgens, abnormal shedding of cells inside the follicle, overgrowth of Cutibacterium acnes, and the inflammatory response that follows.
Genetics set the baseline. Hormonal fluctuation, stress, high-glycaemic diets, comedogenic products, friction from masks or helmets, and certain medications all push it further. Over-cleansing and picking make it visibly worse.
What ingredients are best for acne?
Salicylic acid clears inside the pore, benzoyl peroxide reduces bacterial load, and retinoids prevent the plug forming in the first place – that last one is the most valuable long-term.
Azelaic acid and niacinamide reduce inflammation and the marks left behind, and sulphur or clay help oily, congested skin. Keep the barrier intact with a gentle cleanser and a light non-comedogenic moisturiser; stripped skin produces more oil. Take our Skin Quiz.
