Hydroquinone

Prescription

Nomes comerciais: OBAGI-C Rx system C-CLARIFYING SERUM NORMAL TO oily SKIN LIGHTENING SERUM WITH VITAMIN C

Forma Farmacêutica

Topical

Via de Administração

TOPICAL

Fabricante

Obagi Cosmeceuticals LLC

About This Medication

Description Hydroquinone is 1,4-benzenediol. Hydroquinone occurs as fine, white needles. The drug is freely soluble in water and in alcohol. Chemically, hydroquinone is designated as p-dihydroxybenzene; the empirical formula is C6H6O2; molecular weight is 110.11 g per mol. The chemical structure is in the diagram. chemstructure.jpg

Princípios Ativos

Ingrediente	Concentração
Hydroquinone	-

Indicações e Uso

INDICATIONS AND USAGE The gradual bleaching of hyperpigmented skin conditions such as chloasma, melasma, freckles, senile lentigines, and other unwanted areas of melanin hyperpigmentation.

Posologia e Administração

DOSAGE AND ADMINISTRATION A thin application should be applied once or twice daily or as directed by a physician. If no improvement is seen after three (3) months of treatment, use of this product should be discontinued. Sun exposure should be limited by using a sunscreen agent or protective clothing to cover bleached skin when using and after using this product in order to prevent darkening from reoccurring.

Side Effects Overview

ADVERSE REACTIONS No systemic adverse reactions have been reported. Occasional hypersensitivity (localized contact dermatitis) may occur, in which case the product should be discontinued and physician notified immediately. To report SUSPECTED ADVERSE REACTIONS, contact Obagi Medical Products, a division of Valeant Pharmaceuticals North America LLC, at 1-800-321-4576 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.

Advertências e Precauções

WARNINGS • Hydroquinone is a skin-bleaching agent, which may produce unwanted cosmetic effects if not used as directed. The physician should be familiar with the contents of this insert before prescribing or dispensing this product. • Test for skin sensitivity before using by applying a small amount to an unbroken patch of skin and check within 24 hours. Minor redness is not a contraindication, but where there is itching or vesicle formation or excessive inflammatory response, the product should be discontinued and a physician consulted. Close patient supervision is recommended. • Avoid contact with eyes, nose, mouth, and lips. In case of accidental contact, the patient should rinse thoroughly with water and contact a physician. • Sunscreen use is an essential aspect of hydroquinone therapy because even minimal sunlight exposure sustains melanocytic activity. The Obagi-C ® Rx System C-Therapy Night Cream contains sodium metabisulfite, a sulfite that may cause allergic-type reactions including anaphylactic symptoms and life-threatening or less severe asthmatic episodes in certain susceptible people. The overall prevalence of sulfite sensitivity in the general population is unknown and probably low. Sulfite sensitivity is seen more frequently in asthmatic than in nonasthmatic people.

Contraindicações

CONTRAINDICATIONS People with prior history of sensitivity or allergic reaction to this product or any of its ingredients should not use it. The safety of topical hydroquinone use during pregnancy or in children (12 years and under) has not been established.

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DrugFYI

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Hydroquinone no DrugFYI

Recursos Externos

DailyMed Label

Mesmo Princípio Ativo

Fluocinolone Acetonide, Hydroquinone, And Tretinoin Galderma Laboratories, L.P.

Fonte: openfda

Última atualização: 2026-03-19

Frequently Asked Questions

INDICATIONS AND USAGE The gradual bleaching of hyperpigmented skin conditions such as chloasma, melasma, freckles, senile lentigines, and other unwanted areas of melanin hyperpigmentation.

DOSAGE AND ADMINISTRATION A thin application should be applied once or twice daily or as directed by a physician. If no improvement is seen after three (3) months of treatment, use of this product should be discontinued. Sun exposure should be limited by using a sunscreen agent or protective clothing to cover bleached skin when using and after using this product in order to prevent darkening from reoccurring.

WARNINGS • Hydroquinone is a skin-bleaching agent, which may produce unwanted cosmetic effects if not used as directed. The physician should be familiar with the contents of this insert before prescribing or dispensing this product. • Test for skin sensitivity before using by applying a small amount to an unbroken patch of skin and check within 24 hours. Minor redness is not a contraindication, but where there is itching or vesicle formation or excessive inflammatory response, the product should be …

CONTRAINDICATIONS People with prior history of sensitivity or allergic reaction to this product or any of its ingredients should not use it. The safety of topical hydroquinone use during pregnancy or in children (12 years and under) has not been established.

Hydroquinone is a prescription medication. You will need a valid prescription from a licensed healthcare provider.

References & Data Sources

• DailyMed — Hydroquinone drug label (National Library of Medicine)
• openFDA — Hydroquinone label data (U.S. Food & Drug Administration)
• NDC Directory — Hydroquinone (FDA National Drug Code)

Aviso Médico

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Fontes de dados: DailyMed (NLM), openFDA, MFDS