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 are sun spots?
Sun spots are flat patches of concentrated pigment that form where skin has taken the most ultraviolet exposure – cheeks, nose, forehead, hands, shoulders and chest. Dermatologists call them solar lentigines; they are the same thing as age spots.
They are harmless, but they are a visible marker of accumulated photodamage, and they usually arrive alongside other signs of it: fine lines, loss of firmness and an uneven overall tone.
What causes sun spots?
UV radiation prompts melanocytes to produce extra melanin as a defence. With repeated exposure that response becomes localised and fixed, leaving discrete patches instead of an even tan that fades.
Tanning beds, sunburns in childhood, fair skin and outdoor time without protection all increase the count. Incidental exposure – driving, walking, sitting near a window – adds up more than most people expect.
What ingredients are best for sun spots?
Retinoids to accelerate turnover, vitamin C to protect and brighten, and pigment inhibitors such as alpha arbutin, kojic acid, azelaic acid, tranexamic acid and liquorice root are the core toolkit.
Gentle AHAs help shift surface pigment, and niacinamide slows the transfer of melanin into skin cells. None of it holds without daily broad-spectrum SPF and reapplication. Take our Skin Quiz.
