Rid Mousse

The following drug information is obtained from various newswires, published medical journal articles, and medical conference presentations.


Approval Status:

Approved March 2000

Specific Treatments:

For the treatment of head, pubic (crab), and body lice

Therapeutic Areas

General Information

Rid is a mousse designed to kill head, pubic (crab), and body lice. For effective use, Rid must be thoroughly applied to dry hair, covering the entire infected area. The product should be left in the hair for ten minutes in order to treat the lice and then should be washed thoroughly with water and shampoo. Finally, the hair should be combed with a fine-toothed comb (provided with the product) in order to remove nits (eggs) from the hair. The hair should be treated a second time after 7 to 10 days in order to kill any lice hatched after the first treatment.

Along with Rid Mousse treatment, the infected person's clothing, bedding, hair products, and other personal items should be washed well in hot water. Those items that cannot be washed should be dry cleaned, sealed in a plastic bag, and/or sprayed with a product designed to kill lice on such items.

Lice can be spread by sharing personal items and through personal contact. Since pubic lice can be spread through sexual contact, sexual partners of lice-infected people should simultaneously be treated with Rid.

Side Effects

Discontinue use if:

  • Skin irritation or infection develops
  • There is lice infestation of eyebrows or eyelashes

Consult a doctor before using if you have an allergy to ragweed; the active ingredient in this product is pyrethrum extract derived from the chrysanthemum flower.

For external use only. Do not use inside nose, mouth, or vagina.

Keep out of eyes. If product gets into eyes, flush with water right away.

If swallowed, get medical help or consult the Poison Control Center immediately.

Mechanism of Action

The active ingredient in this product is pyrethrum extract derived from the chrysanthemum flower.

Additional Information

Call the Rid hotline with questions about this product: 1-800-RID LICE (1-800-743-5423)