What are AHAs in skincare?
AHAs – alpha-hydroxy acids – are a family of water-soluble acids derived mostly from fruit, milk and sugar. The group includes glycolic acid (sugar cane), lactic acid (milk), mandelic acid (almonds), malic acid (apples) and citric acid.
They work on the surface of the skin, dissolving the bonds that hold dead cells together so the skin sheds evenly. Molecule size decides strength and tolerance: glycolic is the smallest and most potent, mandelic the largest and gentlest.
What skin concerns do AHAs treat?
AHAs are the first choice for dullness, rough or flaky texture, uneven tone, sun spots, post-acne marks and fine lines. Because they are water-soluble they suit normal to dry skin particularly well.
Beyond exfoliation, sustained use improves hydration, thickens the living epidermis and stimulates collagen, so the change is more than superficial.
What ingredients are best paired with AHAs?
Rebuild after exfoliating: hyaluronic acid, glycerin, ceramides, panthenol and squalane restore what acids strip. Niacinamide supports tone and barrier repair alongside them.
Keep AHAs away from retinoids, BHAs and benzoyl peroxide within the same routine step unless your skin is well conditioned, and start at two or three nights a week. AHAs raise UV sensitivity, so daily broad-spectrum SPF is required. Take our Skin Quiz.
What is adult acne?
Adult acne is acne that persists past the teenage years or appears for the first time in your twenties, thirties or later. It affects a substantial share of adults, and disproportionately women.
It tends to look different from teenage acne: fewer widespread blackheads, more deep tender lesions along the jawline, chin and neck, often on skin that is simultaneously dry, sensitive or already showing early signs of ageing.
What causes adult acne?
Hormonal fluctuation is the leading driver – menstrual cycles, coming off or starting contraception, pregnancy, perimenopause and conditions such as PCOS all shift androgen activity and sebum output.
Stress and cortisol, sleep debt, high-glycaemic diets, comedogenic makeup and skincare, friction, and certain medications compound it. Adult skin also heals more slowly, so marks linger longer than they did at nineteen.
What ingredients are best for adult acne?
The challenge is treating acne without wrecking a barrier that is also ageing. Retinoids do double duty here, clearing follicles and stimulating collagen at the same time.
Azelaic acid is excellent for adult skin because it handles lesions, redness and post-acne marks together. Add salicylic acid used sparingly, niacinamide to regulate oil and calm inflammation, and ceramides plus hyaluronic acid to keep hydration up. Skip harsh benzoyl peroxide concentrations and scrubs. Take our Skin Quiz.
