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Kerafoam 42

Generic name: urea
Dosage form: aerosol, foam
Drug class: Topical emollients

Medically reviewed by Last updated on Oct 22, 2020.

Disclaimer: This drug has not been found by FDA to be safe and effective, and this labeling has not been approved by FDA. For further information about unapproved drugs, click here.


KERAFOAM® 42 Emollient Foam is a keratolytic emollient foam which is a tissue softener for skin and/or nails. Each gram of Kerafoam 42 Emollient Foam contains 42% urea USP, ceteareth-10 phosphate, cetearyl alcohol NF, dicetyl phosphate, dl-alpha tocopheryl acetate USP, edetate disodium dihydrate USP, methylparaben NF, propylene glycol USP, propylparaben NF, purified water USP, sodium phosphate monobasic USP. Also contains: Propellant HFA-134a (1,1,1,2- tetrafluoroethane).
Urea USP is a diamide of carbonic acid with the following chemical structure:

Kerafoam 42 - Clinical Pharmacology

Urea gently lyses/dissolves the intercellular matrix of surface skin cells loosening and allowing a shedding of rough, thickened and scaly hyperkeratotic skin. Urea also moisturizes and softens skin.


For softening, smoothing and removing rough scaling hyperkeratotic skin in conditions such as xerosis, ichthyosis, skin cracks and fissures, dermatitis, eczema, psoriasis, keratoses and calluses.


Known hypersensitivity to any of the listed ingredients. Discontinue use if hypersensitivity is observed.


FOR EXTERNAL USE ONLY. Avoid contact with eyes, lips or mucous membranes. Keep out of the reach of children. Contents under pressure. Do not puncture or incinerate container. Do not expose to temperatures above 120ºF (49ºC).


Information for patients:

This medication is to be used as directed by a physician and should not be used to treat any condition other than that for which it was prescribed. If redness or irritation occurs, discontinue use.


Pregnancy Category C. Animal reproduction studies have not been conducted with Kerafoam 42 Emollient Foam. It is not known whether Kerafoam 42 Emollient Foam can cause fetal harm when administered to a pregnant woman or can affect reproduction capacity. Kerafoam 42 Emollient Foam should be given to a pregnant woman only if clearly needed.

Nursing Mothers

It is not known whether or not this drug is secreted in human milk. Because many drugs are secreted in human milk, caution should be exercised when Kerafoam 42 Emollient Foam is administered to a nursing woman.

Adverse Reactions

Transient stinging, burning, itching or irritation may occur and normally disappear on discontinuing the medication.

Kerafoam 42 Dosage and Administration

Shake Vigorously, Tap Bottom of Can, and Prime Before Initial Use. Shake Vigorously and Tap Before Each Use.
To Prime: After shaking, gently tap bottom of can onto palm of other hand or a solid surface at least 3 times. Hold the can upright, direct away from the patient, and firmly depress the actuator for 1 to 3 seconds or until foam begins to dispense. (If foam does not dispense within 3 seconds: re-shake can, gently tap bottom of can onto a solid surface at least 3 times, and depress the actuator again until foam begins to dispense.)
Before Each Use: Shake vigorously and gently tap bottom of can onto palm of other hand or a solid surface at least 3 times.
During Use: Holding can upright, dispense Kerafoam 42 into palm of hand and apply to affected area twice per day, or as directed by a physician. Rub in until completely absorbed. Wipe off any excess foam from actuator after use.

How is Kerafoam 42 Supplied

Kerafoam 42 Emollient Foam is supplied in a 60 g (NDC# 16781-181-60) and 100g (NDC# 16781-181-96) aluminum cans.

Store at room temperature: 59º - 77ºF (15º - 25ºC). Protect from freezing. Store upright.

Patent Pending

P/N 2614 Rev. 1

Manufactured For:

Onset Therapeutics
Cumberland, RI 02864

(888) 713-8154


NDC 16781-181-06
Rx Only

Kerafoam® 42
Emollient Foam Urea (42%)

For softening, smoothing, and removing rough scaling hyperkeratotic skin
See prescribing information enclosed

Professional Sample
Enclosed: Six 5g Samples
Available in 60g and 100g Cans


NDC 16781-181-06
Rx Only
Professional Sample
Not for Sale
Net Weight 5g

Kerafoam® 42
Emollient Foam Urea (42%)

Sample will not dispense entire contents.

Kerafoam 42
urea aerosol, foam
Product Information
Product Type HUMAN PRESCRIPTION DRUG LABEL Item Code (Source) NDC:16781-181
Route of Administration TOPICAL DEA Schedule
Active Ingredient/Active Moiety
Ingredient Name Basis of Strength Strength
UREA (UREA) UREA 42 g in 100 g
Inactive Ingredients
Ingredient Name Strength
# Item Code Package Description
1 NDC:16781-181-06 1 CAN (1 CAN) in 1 BOX
1 5 g in 1.0 CAN
2 NDC:16781-181-11 1 CAN (1 CAN) in 1 BOX
2 10 g in 1.0 CAN
3 NDC:16781-181-60 1 CAN (1 CAN) in 1 BOX
3 60 g in 1.0 CAN
4 NDC:16781-181-96 1 CAN (1 CAN) in 1 BOX
4 100 g in 1.0 CAN
Marketing Information
Marketing Category Application Number or Monograph Citation Marketing Start Date Marketing End Date
unapproved drug other 04/01/2009 12/31/2011
Labeler - Onset Dermatologics LLC (793223707)
Registrant - Onset Dermatologics LLC (964275155)
Name Address ID/FEI Operations
Onset Dermatologics LLC 793223707 Manufacture
Onset Dermatologics LLC