权利要求：
35
CLAIMS
1. A multi-layered sheet mask comprising at least a) a porous first layer having a first side and a second side, wherein the first side is opposite to the second side, and comprises a plurality of three-dimensional patterns extending therefrom; b) a second layer attached to the second side of the porous first layer, the second layer comprising at least one pouch for receiving or containing at least one first active ingredient; a porous support structure; an air pouch that is sandwiched between the second side of the porous first layer and the porous support structure; and a plurality of microchannels that extend from the pouch and beyond the first side of the porous first layer when the air pouch is deflated; and c) a third layer attached to the second layer for receiving or containing at least one second active ingredient.
2. The multi-layered sheet mask according to claim 1, wherein the porous first layer and the porous support structure of the second layer comprise a plurality of slits.
3. The multi-layered sheet mask according to claim 1 or 2, wherein the porous first layer and the three-dimensional patterns are made of a material independently selected from the group consisting of synthetic, regenerated and natural biocompatible materials.
4. The multi-layered sheet mask according to claim 3, wherein the material is selected from the group consisting of UV-curable polymer, UV-LED curable polymer, bioabsorbable polymer, cotton, nylon, nylon microfibre, regenerated cellulose fibre, biocellulose, foil, hyaluronic acid, and hydrogel.
5. The multi-layered sheet mask according to any one of claims 1 to 4, wherein the three- dimensional patterns comprise an exfoliating agent selected from the group consisting of alpha hydroxy acids, beta hydroxy acids, plant-based enzymes, animal-based enzymes and mixtures thereof; or wherein the three-dimensional patterns comprise an exfoliating agent selected from the group consisting of lactic acid, lactobionic acid, glycolic acid, hydroxycaproic acid, hydroxycaprylic
36 acid, citric acid, malic acid, mandelic acid, tartaric acid, phytic acid, salicylic acid, hyaluronic acid, azelaic acid, kojic acid, ascorbic acid, trichloroacetic acid, alguronic acid, lipoic acid, ferulic acid and mixtures thereof.
6. The multi-layered sheet mask according to any one of claims 1 to 5, wherein the three- dimensional patterns have an average diameter in the range of 1 pm to 1 mm, and a height in the range of 1 mm to 3 mm.
7. The multi-layered sheet mask according to any one of claims 1 to 6, wherein the three- dimensional patterns comprise a plurality of pointed three-dimensional shapes as skinengaging ends, wherein the pointed three-dimensional shapes are selected from the group consisting of cone, pyramid, stellated polyhedron, regular polyhedron, irregular polyhedron partial regular polyhedron, partial irregular polyhedron, sphere and at least one cone, sphere and at least one spike, sphere and at least one pyramid, hemisphere and at least one spike, spike, and combinations thereof.
8. The multi-layered sheet mask according to claim 7, wherein the pointed three-dimensional shapes have a height in the range of 200 pm to 250 pm.
9. The multi-layered sheet mask according to claim 7 or 8, wherein when the pointed three- dimensional shapes comprise of at least one spike, each spike has a length in the range of 40 pm to 100 pm.
10. The multi-layered sheet mask according to claim 9, wherein the spike is further positioned at an angle in the range of 10° to 30° from the vertical plane.
11. The multi-layered sheet mask according to any one of claims 1 to 10, wherein the slits of the porous first layer and slits of the porous support structure of the second layer have an inner diameter in the range of 1 pm to 100 pm, and an outer diameter in the range of 100 pm to 150 pm.
12. The multi-layered sheet mask according to any one of claims 1 to 11, wherein the slits of the porous first layer and slits of the porous support structure of the second layer have a shape
selected from the group consisting of polyhedron, non-polyhedron, and combinations thereof; or wherein the slits of the porous first layer and slits of the porous support structure of the second layer have a shape selected from the group consisting of cylinder, prism, and combinations thereof; or wherein the slits of the porous first layer and slits of the porous support structure of the second layer have a hexagonal prism shape.
13. The multi-layered sheet mask according to any one of claims 1 to 12, wherein the microchannels of the second layer have a height corresponding to different zones of a face as follows: a height in the range of 1.5 mm to 1.8 mm corresponding to a first zone consisting of hairline, forehead, temple and combinations thereof of the face; a height in the range of 1.2 mm to 1.5 mm corresponding to a second zone consisting of nose, cutaneous upper lip, philtum, philtum crest, cutaneous lower lip, chin, and combinations thereof of the face; and a height in the range of 1.6 mm to 1.9 mm corresponding to a third zone consisting of cheeks, midface, jawline, and combinations thereof of the face.
14. The multi-layered sheet mask according to any one of claims 1 to 13, wherein the microchannels comprise pointed tips which penetrate the second side of the porous first layer, the first side of the porous first layer, an epidermis layer of a skin, and a dermis layer of a skin, when the air pouch is deflated.
15. The multi-layered sheet mask according to any one of claims 1 to 14, wherein the at least one first active ingredient in each of the at least one pouch of the second layer is the same or different from each other; and wherein the first active ingredient is selected from the group consisting of anti-pigmentation agent, anti-ageing agent, anti-wrinkle agent, anti-acne agent, moisturizing agent, treatment agent, and mixtures thereof.
16. The multi-layered sheet mask according to any one of claims 1 to 15, wherein the third layer is portioned into a number of parts, each part receiving or containing the at least one second active ingredient that is the same or different from each other; and wherein the second active ingredient is selected from the group consisting of oil, chemical sunscreen, anti-pigmentation agent, anti-ageing agent, anti-wrinkle agent, anti-acne agent, moisturizing agent, treatment agent, and mixtures thereof.
17. The multi-layered sheet mask according to any one of claims 1 to 16, wherein a circumferential edge comprising the circumferential edges of the porous first layer, the second layer, and the third layer, having a width of at least 5 mm.
18. A mould for producing the three-dimensional patterns of the porous first layer of the multilayered sheet mask according to any one of claims 1 to 17, wherein the mould comprises a negative replica of the three-dimensional patterns.
19. The mould according to claim 18, further comprising a plurality of holes in submicrometre scale within the negative replica.
20. The mould according to claim 18 or 19, wherein the mould is transparent; or wherein the mould is formed by polymerizing a resin over a printed mould comprising a positive replica of the three-dimensional patterns.
21. A method of producing a multi-layered sheet mask, the method comprising the steps of: a) forming a porous first layer having a first side and a second side, by contacting a mask-shaped biocompatible material with a whole facial mask mould having a plurality of three-dimensional patterns thereon, wherein the three-dimensional patterns comprise a material selected from the group comprising of biocompatible material, exfoliating agent and combinations thereof, and drying for a duration; b) attaching the second layer to the second side of the porous first layer by bonding the circumferential edges of the first and second layers together; and c) attaching a third layer to the second layer by bonding the circumferential edges of the second and third layers together; wherein the multi-layered sheet mask comprises at least
39 a porous first layer wherein the first side is opposite to the second side and comprises a plurality of three-dimensional patterns extending therefrom; a second layer attached to the second side of the porous first layer, the second layer comprising at least one pouch for receiving or containing at least one first active ingredient; a porous support structure; an air pouch that is sandwiched between the second side of the porous first layer and the porous support structure; and a plurality of microchannels that extend from the pouch and beyond the first side of the porous first layer when the air pouch is deflated; and a third layer attached to the second layer for receiving or containing at least one second active ingredient.
22. The method according to claim 21, wherein the three-dimensional patterns of step (a) are formed by filling sections of the whole facial mask mould with the material of step (a) and vacuuming for a duration; and wherein the sections comprise of the mould according to any one of claims 18 to 20.
23. The method according to claim 22, wherein the sections of the whole facial mask mould correspond to facial areas selected from the group consisting of hairline, forehead, temple, nose, cutaneous upper lip, philtum, philtum crest, cutaneous lower lip, chin, cheeks, midface, jawline, and combinations thereof.
24. The method according to any one of claims 21 to 23, wherein the attaching step (b) further comprises the step of applying fastening strips between the first and second layers; or wherein the attaching step (c) further comprises the step of applying fastening strips between the second and third layers.
25. The method according to any one of claims 21 to 24, wherein the bonding of steps (b) and (c) bonds at least a width of 5 mm of the circumferential edges.