What is azelaic acid in skincare?
Azelaic acid is a dicarboxylic acid found naturally in grains such as barley, wheat and rye, and produced on the skin by yeast that lives there. Cosmetic products use 10%; prescription strengths are 15% and 20%.
It is unusual among actives in doing several jobs at once – it is antibacterial, anti-inflammatory, mildly keratolytic and a tyrosinase inhibitor – while remaining gentle enough for reactive skin and safe in pregnancy.
What skin concerns does azelaic acid treat?
A systematic review found evidence for azelaic acid across acne, rosacea, melasma and skin ageing – a range few single ingredients cover.
That makes it especially useful where concerns overlap: inflamed breakouts plus the brown marks they leave, or rosacea redness plus uneven tone. Its mechanisms include normalising follicular keratinisation and scavenging reactive oxygen species.
What ingredients are best paired with azelaic acid?
Niacinamide is an excellent partner for redness and sebum control. It also layers well with hyaluronic acid, ceramides and squalane, and can be combined with retinoids or salicylic acid if introduced gradually.
Expect a mild tingle for the first week or two. Because it is one of the few actives considered safe during pregnancy, it is often the substitute of choice when retinoids have to be paused. Take our Skin Quiz.
What is redness?
Facial redness is visible dilation of the small blood vessels near the skin’s surface. It ranges from transient flushing that comes and goes, to persistent erythema across the cheeks and nose, to fixed thread veins that stay visible all the time.
Redness is a symptom rather than a diagnosis. It can signal rosacea, irritation, an over-exfoliated barrier, eczema, an allergic reaction or simply reactive skin that responds strongly to heat and stress.
What causes redness?
Most persistent redness traces back to a compromised barrier and heightened nerve sensitivity. When the barrier thins, irritants penetrate more easily and the skin mounts an inflammatory response to things it would normally tolerate.
Common aggravators: over-exfoliation, high-strength actives used too often, fragrance and essential oils, hot water, alcohol, spicy food, sudden temperature change, sun exposure and stress. Trying to treat redness with more actives usually deepens it.
What ingredients are best for redness?
Prioritise calming and rebuilding over correcting. Niacinamide, azelaic acid, centella asiatica, green tea extract, liquorice root, allantoin, bisabolol and colloidal oatmeal all reduce visible inflammation.
Then repair the barrier with ceramides, cholesterol, fatty acids, glycerin, panthenol and squalane, and protect it with a gentle mineral SPF. Strip the routine back to cleanser, moisturiser and sunscreen for a few weeks before reintroducing anything active. Take our Skin Quiz.
