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 rosacea?
Rosacea is a chronic inflammatory skin condition that affects the central face – cheeks, nose, chin and forehead. It presents as persistent redness, visible broken capillaries, flushing that comes and goes, and in some subtypes acne-like papules and pustules.
Unlike acne, rosacea involves no comedones. It is driven by a combination of vascular hyper-reactivity, neurogenic inflammation and an overactive innate immune response, often with an impaired skin barrier alongside.
What causes rosacea?
There is no single cause. Genetic predisposition, an exaggerated immune response involving cathelicidin, overgrowth of Demodex mites, and dysfunction of the facial blood vessels all appear to contribute.
Flares are triggered by heat, sun exposure, alcohol, spicy food, hot drinks, exercise, stress, wind and cold, and by harsh skincare. Identifying and avoiding your own trigger set does as much as any product.
What ingredients are best for rosacea?
Azelaic acid and niacinamide are the standout actives – both reduce redness and inflammation without provoking the barrier. Sulphur, green tea extract, liquorice root and centella asiatica also calm reactive skin.
Build everything else around barrier repair: ceramides, glycerin, squalane and panthenol, with a gentle non-foaming cleanser and a mineral SPF every day. Avoid alcohol-heavy toners, fragrance, menthol, physical scrubs and high-strength acids. Take our Skin Quiz to build a routine your skin will tolerate.
