What is hydroquinone in skincare?
Hydroquinone is a phenolic compound that suppresses melanin production by inhibiting tyrosinase, the key enzyme in the pigment pathway. It has been the dermatological reference standard for skin lightening for decades.
Its regulatory status varies widely. In the United States prescription strengths are 4%; in the European Union and several other markets it is banned from cosmetics entirely and available only through a doctor.
What skin concerns does hydroquinone treat?
It is used for melasma, solar lentigines, post-inflammatory hyperpigmentation and other stubborn pigment that has not responded to gentler agents. Meta-analyses of topical melasma treatments consistently place it among the most effective options.
It is intended for short courses – typically three to six months. Prolonged unsupervised use carries a risk of ochronosis, a blue-black discolouration that is very difficult to reverse, which is why safety reviews stress medical supervision.
What ingredients are best paired with hydroquinone?
It is most effective in the classic triple combination with a retinoid and a mild corticosteroid, prescribed and monitored by a dermatologist. Daily broad-spectrum SPF is mandatory, or the pigment simply returns.
If hydroquinone is unavailable or unsuitable, azelaic acid, tranexamic acid, alpha arbutin, kojic acid, niacinamide and vitamin C are the evidence-backed alternatives – slower, but safe for long-term use. 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.
