What is retinol in skincare?
Retinol is an over-the-counter retinoid – a vitamin A derivative that your skin converts into retinoic acid, the biologically active form. Once converted, it binds to receptors in the skin and signals cells to turn over faster, ramp up collagen production and normalise the way pores shed keratin.
That combination is why retinol is one of the most studied active ingredients in modern skincare, and why it sits at the centre of most dermatologist-designed anti-ageing routines. Strengths typically range from 0.01% to 1%, and lower concentrations used consistently often outperform high strengths used sporadically.
What skin concerns does retinol treat?
Retinol works on several concerns at once: fine lines and wrinkles, loss of firmness and crepey texture, uneven skin tone, dark spots and post-acne pigmentation, enlarged or congested pores, and both hormonal and adult acne.
Because it acts on cell turnover rather than on the skin’s surface, results build over weeks rather than days. Most people see visible change between eight and twelve weeks of consistent nightly use, with continued improvement well beyond that.
What ingredients are best paired with retinol?
Pair retinol with hydrating, barrier-supporting ingredients – hyaluronic acid, ceramides, niacinamide, squalane and peptides – to offset the dryness, flaking and redness that can come with faster turnover. Apply it at night, and wear a broad-spectrum sunscreen every morning, since retinol makes skin more sun-sensitive.
Avoid layering it in the same step as AHAs, BHAs or benzoyl peroxide unless your routine has been built to handle it, and introduce it two or three nights a week before going nightly. Want to know which retinol strength suits your skin? 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.
