Hydroquinone

Indications
Topical/Cutaneous
Hyperpigmentated skin conditions
Adult: Apply and rub in a thin layer of 2-4% preparation to affected area bid.
Contraindications
Hypersensitivity. Sunburn or depilatory usage. Children <12 yr.
Warnings / Precautions
Pregnancy, lactation. Avoid contact with eyes and on abraded or sunburnt skin. Avoid unnecessary exposure to sunlight. Limit application to area no larger than face and neck or hands and arms. Not advised to use when itching, vesicle formation, or excessive inflammation occurs. Discontinue application if there is no improvement after 2 mth of treatment.
Adverse Reactions
Transient erythema, mild burning sensations; hyperpigmentation. Staining and corneal opacities. Tremors and convulsions after systemic absorption. Occasionally, hypersensitivity.
Overdose Reactions
Tremors, seizures, and occasionally severe hemolytic anemia. Administration of activated charcoal and gastric lavage, followed by supportive therapy.
Mechanism of Actions
Hydroquinone is a topical depigmentating agent used in hyperpigmentation conditions by suppressing melanocyte metabolic processes. It also increases melanin excretion from melanocytes and prevents its production.
ATC Classification
D11AX11 - hydroquinone ; Belongs to the class of other dermatologicals.
Available As
  • Hydroquinone 2%
  • Hydroquinone 2% w/w
  • Hydroquinone 2.00%
  • Hydroquinone 3%
  • Hydroquinone 4%
  • Hydroquinone 4% w/w
  • Hydroquinone 5%
  • Hydroquinone 5% w/v
  • Hydroquinone 5% w/w
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