Device for delivery of skin care composition
A novel device and method for delivering a liquid containing an active ingredient to a treatment site on the skin is disclosed. The device is useful for treating lesions or abnormal skin features such as corns, warts, calluses, bunions, actinic keratoses and hard hyperkeratotic skin as is often found on the face, arms, legs or feet.
1. A layered delivery system for a skin care composition, the system comprising:
a. a first flexible cover layer forming an upper surface of the delivery system removably attached to a coupling layer, the coupling layer having (i) an upper surface attached in facing relation to the first flexible cover layer, (ii) an opposite lower surface, (iii) an outer perimeter, (iv) and an open interior defined by coupling layer sidewalls, wherein the coupling layer sidewalls define an interior void volume substantially closed by the first flexible cover layer;
b. a first adhesive layer disposed on a lower surface of the delivery system configured to be directed toward the skin during use and protected by a removable release liner; and
c. a first reservoir comprising a sac having a rupturable wall and containing the skin care composition, the reservoir being attached to a lower surface of the first flexible cover layer and which extends therefrom into the interior void volume wherein said first reservoir is arranged and configured to dispense the skin care composition into the interior void volume and directly to the skin upon the rupture of the rupturable wall during use;
wherein the first flexible cover layer and the attached first reservoir are removable from the coupling layer to permit the coupling layer to accommodate a second flexible cover layer and an attached second reservoir for a second dispensing of skin care composition.
2. The layered delivery system of claim 1 wherein the first adhesive layer is coupled to the lower surface of the coupling layer through at least one intermediate layer.
3. The layered delivery system of claim 1 wherein the first flexible cover layer is removably attached to the coupling layer through a second adhesive layer.
4. The layered delivery system of claim 1 wherein the first or second reservoir comprises a porous structure impregnated with the skin care composition.
5. The layered delivery system of claim 1 wherein the skin care composition comprises at least one active ingredient, at least one cosmetic ingredient, or combinations thereof.
6. A method of delivering multiple doses of one or more compositions to a skin care area comprising the steps of:
a. Applying to the skin a layered delivery system comprising:
i. A first flexible cover layer forming an upper surface of the delivery system removably attached to a coupling layer, the coupling layer having an upper surface in facing relation to the first flexible cover layer, an opposite lower surface, an outer perimeter, and defining an interior void volume substantially closed by the first flexible cover layer;
ii. A first adhesive layer disposed on a lower surface of the delivery system; and
iii. A first reservoir associated with the flexible cover layer, disposed in fluid communication with the interior void volume, and carrying a first composition; Whereby the outer perimeter of the coupling layer surrounds a desired skin care area, the skin care area is in facing relation to the interior void volume, and the first adhesive layer attaches the layered delivery system to the skin;
b. Releasing the first composition from the first reservoir to the interior void volume whereby the composition is in fluid communication with the skin care area;
c. Removing the first flexible cover layer and first reservoir from the layered delivery system while the first adhesive maintains the coupling layer to the skin and applying a second flexible cover layer and second reservoir associated therewith substantially the same as the first flexible cover layer and first reservoir to the upper surface of the coupling layer; and
d. Releasing a second composition from the second reservoir into the interior void volume.
7. The method of claim 6 further comprising repeating steps (c) and (d) with additional flexible cover layers and reservoirs in compliance with a desired skin care regimen.
8. The method of claim 6 wherein the skin care area includes at least one skin blemish and the composition comprises at least one active ingredient directed to the at least one skin blemish.
9. The method of claim 6 wherein the first and second compositions are substantially identical.
10. The method of claim 6 wherein the first and second compositions are substantially different.