Provided is a gel nail sticker including: a lower laminated part which is a part directly attached to a nail or a toenail, and has a color or a pattern, and is formed of a flexible material to correspond to a curved surface of the nail or the toenail; and an upper laminated part which is a transparent coated layer positioned on the lower laminated part and providing glossiness to a color or a pattern of the lower laminated part, and is in a flexible semi-solid state to correspond to the curved surface of the nail or the toenail before being attached to the nail or the toenail, and is cured to a solid state while maintaining a form attached to the nail or the toenail when an ultraviolet ray is irradiated to the upper laminated part after the upper laminated part is attached to the nail or the toenail.

Provided is a kit, device and method for decorating fingernails and toenails with an illuminating light. The kit includes a power source, a power source case, at least one light to be positioned on a fingernail or toenail, an adhesive for connecting the light and the power source case to the fingernail or toenail; a conductive ink for electrically connecting the power source to the light; and a conductive ink application device for applying the conductive ink directly to the fingernail or toenail to electrically connect the power source to the lights. The device generally includes a power source, a light and an electrical circuit positioned on the top surface of a fingernail or toenail whereas the method generally includes steps for applying these components onto the surface of a fingernail or toenail.

Methods and devices for producing artificial nails are disclosed, comprising: automatically recognizing user nail information by means of a 3D scanner (S100); recognizing a selected nail decoration design of a 2D or 3D form by means of a UV 3D printer (S200); a step in which the UV 3D printer, equipped with a device capable of adjusting a Z axis, forms a decoration layer corresponding to a curved surface of a user's nail shape with the nail decoration design recognized in step S200, on the basis of the user nail information recognized in step S100 (S300); a step in which the UV 3D printer forms an adhesive layer to be attached with the decoration layer produced in step S300; and a step of completely curing the decoration layer and the adhesive layer in a short time by subjecting same to heat treatment by using a UV lamp of the UV 3D printer, thereby printing an artificial nail in which the adhesive layer is coupled to the bottom of the decoration layer.

Provided is a gel nail sticker including: a lower laminated part which is a part directly attached to a nail or a toenail, and has a color or a pattern, and is formed of a flexible material to correspond to a curved surface of the nail or the toenail; and an upper laminated part which is a transparent coated layer positioned on the lower laminated part and providing glossiness to a color or a pattern of the lower laminated part, and is in a flexible semi-solid state to correspond to the curved surface of the nail or the toenail before being attached to the nail or the toenail, and is cured to a solid state while maintaining a form attached to the nail or the toenail when an ultraviolet ray is irradiated to the upper laminated part after the upper laminated part is attached to the nail or the toenail.