Research library
Hydroquinone 8%, explained
12 guides, organized by the question you are trying to answer.
Research Guides
Exogenous ochronosis: what the sources report
What labels, reviews, an observational study and an FDA page report about exogenous ochronosis, and what none of them measure.
FDA status of hydroquinone products and over-the-counter skin lighteners
What the FDA states about the approved hydroquinone drug, OTC skin lighteners, mercury and DailyMed listings for unapproved hydroquinone products.
How long hydroquinone courses last and what happens after
Time frames, maintenance and relapse as labels, studies and reviews state them, and that no source describes an on-off cycle for 8%.
Hydroquinone above 4%: what the sources say and do not say
What the sources used here say, and do not say, about hydroquinone above 4%, ochronosis reports and unapproved listings.
Hydroquinone melasma trials: strengths, sizes and what they measured
A plain summary of the melasma trials and reviews: the strengths, comparators, sizes, lengths and endpoints, and what they cannot show.
Hydroquinone, pregnancy and breastfeeding: what the sources state
What a Tri-Luma label, a hydroquinone 4% label, tretinoin sources and LactMed state about pregnancy and breastfeeding, reported as written.
Hydroquinone side effects, allergic reactions and when to call a provider
Irritation and allergy figures from labels and trials of hydroquinone creams, and what the sources say to do about a bad reaction.
Other pigment conditions, comparators and options: what the sources report
What small trials and reports say about hydroquinone outside melasma, against other agents and a laser, and what sources say about other options.
Sun protection and hydroquinone: what the sources say
What labels and a consensus abstract say about sunscreen and sun avoidance with hydroquinone, and where the evidence stops.
Tri-Luma label: what the approved triple-combination cream says
What the prescribing information for the approved fluocinolone acetonide, hydroquinone and tretinoin cream says about use, warnings and side effects.
What compounded hydroquinone means: what the FDA says about compounded drugs
What the FDA says compounded drugs are and are not, the risks it names, section 503A, and two quality examples from other compounded products.
What hydroquinone is and how it might work
How labels and reviews describe hydroquinone and melasma, and the different mechanisms proposed for hydroquinone, retinoids and niacinamide.
