Dioxybenzone 0.3% + Hydroquinone 0.4% + Octyldimet p-aminobenzoate 0.8% + Oxybenzone 0.2%

Indications

Dioxybenzone 0.3% + Hydroquinone 0.4% + Octyldimet p-aminobenzoate 0.8% + Oxybenzone 0.2% is used for: Chloasma, Melasma, Freckles, Senile lentigines, Hyperpigmentation

Adult Dose

Hyperpigmentated skin conditions Adult: Apply and rub in a thin layer to affected area bid.

Child Dose

Renal Dose

Administration

After desired bleaching, use only as needed to maintain results of treatment. After reduction of hyperpigmentation, use of sunscreen agents and/or protective clothing should continue on bleached skin to prevent repigmentation.

Contra Indications

Hydroquinone is contraindicated to patients with prior history of hypersensitivity or allergic reaction to hydroquinone or other ingredients in the preparation. Sunburn or depilatory usage. Children <12 yr.

Precautions

Test for skin sensitivity before using by applying a small amount to an unbroken patch of skin to check in 24 hours. Minor redness is not a contraindication, but where there is itching or vesicle formation or excessive inflammatory response, further treatment is not advised. If no bleaching or lightening effect is noted after 2 months of treatment, the medication should be discontinued.Contact with the eyes and lips should be avoided. Hydroquinone should not be applied to cut or abraded skin. 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.

Pregnancy-Lactation

Interactions

Adverse Effects

Side effects of Dioxybenzone 0.3% + Hydroquinone 0.4% + Octyldimet p-aminobenzoate 0.8% + Oxybenzone 0.2% : Transient erythema, mild burning sensations; hyperpigmentation. Staining and corneal opacities. Tremors and convulsions after systemic absorption. Occasionally, hypersensitivity.

Mechanism of Action

Oxybenzone: Although benzophenones are primarily UV-B absorbers, oxybenzone absorbs well through UV-A II. Oxybenzone can be considered a broad-spectrum absorber. It significantly augments UV-B protection when used in a given formula. 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. Aminobenzoic acid is used topically as a sunscreen. It is used to prevent sunburn, but unlikely to prevent drug-related or other photosensitivity reactions associated with UVA light.