Antibiotic/benzoyl peroxide dispenser

Abstract

Two separate compositions, one containing an effective anti-acne treating amount of a first active ingredient and one containing a second active ingredient that is incompatible with the first active ingredient are packaged within and dispensed from a common dispenser. By packaging these two active ingredients in this manner, long shelflife and convenient dispensing and application are provided.

Description

RELATED APPLICATIONS [0001] This application is a continuation of U.S. application Ser. No. 10 / 121,839 filed Apr. 12, 2002 which is a continuation-in-part of 09 / 734,748 filed on Dec. 12, 2000, now U.S. Pat. No. 6,462,025. The entire disclosure of each of these applications are hereby incorporated by reference.BACKGROUND [0002] 1. Technical Field [0003] This disclosure relates to compositions and apparatus for dispensing two distinct substances. More specifically, this disclosure relates to compositions and apparatus which allow long-term storage and subsequent dispensing of two compositions, to wit, a first composition containing a first active ingredient for treating acne and a second composition containing a second active ingredient that is incompatible with the first active ingredient. [0004] 2. Background of Related Art [0005] Acne is a common inflammatory disease of human skin, and concentrates in skin areas where sebaceous glands are largest, most numerous, and most active. In...

AI Technical Summary

Benefits of technology

[0013] It has now been discovered that two separate compositions, one containing a first active ingredient which is effective in treating acne and one containing a second active ingredient that is incompatible with the first active ingredient can be packaged within and dispensed from a common dispenser. More particularly, a dual dispenser and has two chambers and a pump means for removing first and second compositions from the chambers through one or more outlets. The first chamber contains a first composition that includes a first active ingredient that is effective in treating acne; and the second chamber contains a second composition containing a second active ingredient that is incompatible with the first active ingredient. Preferably, both the first and second active ingredients are effective against acne. By packaging the two active ingredients in this manner, long shelflife and convenient dispensing and application are provided.

Problems solved by technology

However, in the more inflammatory types of acne, bacterial invasion of or about the pilosebaceous follicles occurs and pustules, infected cysts and, in extreme cases, canalizing inflamed and infected sacs appear.

These lesions may become extensive and leave permanent, disfiguring scars.

The facial eruptions are known to cause such psychic trauma in many adolescents that they find it difficult to make personal adjustments and consequently, withdraw and self-pity occur.

None of these prior preparations has been completely effective.

However, separately packaging multiple dosages of the two active ingredients presents a number of disadvantages to the end-user.

This provides opportunities for spillage or over- or under-dosing, which can lead to skin irritation and other side effects.

Furthermore, such a multidose system necessarily adds to the costs of packaging, shipping and storage.

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