A writing felt pen including a barrel and a nib attached to the barrel, and a deformable pouch comprising a mix of absorbent polymer and fibres, an ink being absorbed in the absorbent polymer and the nib being in fluidic communication with the mix.

A thermochromic ink writing instrument comprising a body extending along an axis, the body having a first end and a second end opposed to the first end along the axis, the first end being provided with a writing tip and with an eraser, wherein the writing tip is fed with thermochromic ink, wherein the writing tip is fixed with regard to the body and the eraser is movable along the axis with regard to the body, and the thermochromic ink writing instrument further comprising a helical-cam propelling mechanism configured to move the eraser along the axis between a retracted position and a protruding position.

An erasable ink writing instrument comprising a body extending along an axis, the body having a first end and a second end opposed to the first end along the axis, the first end being provided with a writing tip and with an eraser, wherein the writing tip is fed with erasable ink, wherein the writing tip is fixed with regard to the body and the eraser is movable along the axis with regard to the body, and the erasable ink writing instrument further comprising a helical-cam propelling mechanism configured to move the eraser along the axis between a retracted position and a protruding position. The erasable ink is a peelable ink and the eraser is a friction body.

A water-based liquid cosmetic containing diethylhexyl sodium sulfosuccinate, an inorganic coloring pigment, a water-soluble dispersant, and a film-forming polymer emulsion, wherein a content of diethylhexyl sodium sulfosuccinate is 0.01 to 1 mass % and a content of the inorganic coloring pigment is 3 to 20 mass %, based on a total amount of the cosmetic, and wherein the inorganic coloring pigment contains carbon black.

A water-based liquid cosmetic containing diethylhexyl sodium sulfosuccinate, an inorganic coloring pigment, a water-soluble dispersant, and a film-forming polymer emulsion, wherein a content of diethylhexyl sodium sulfosuccinate is 0.01 to 1 mass % and a content of the inorganic coloring pigment is 3 to 20 mass %, based on a total amount of the cosmetic, and wherein the inorganic coloring pigment contains carbon black.

The present disclosure concerns a water-based color-changing ink composition with two different states of color over time, an initial color A and then a second color B which is not colorless, comprising a volatile pH-modifier base capable of evaporating at room temperature (20° C.), a pH-sensitive dye, and an optional non-pH sensitive dye. The disclosure also concerns a method for preparing such color-changing ink composition. A writing instrument comprising such color-changing ink composition, and a kit comprising such color-changing ink composition and an eradicator, as well as methods for writing on a substrate, are also part of the disclosure. Finally, the disclosure aims at a substrate coated with a color-changing ink composition according to the disclosure.

To prevent ink from dripping, drying, and the like. A writing utensil includes: a shaft tube; a writing chip that protrudes more toward the front than the shaft tube so as to discharge ink when pressed against a written face; and an ink supply part that supplies ink to the writing chip from a rear side, wherein the writing chip is at a separate position that is separated toward the front across a space with respect to the ink supply part and is moved due to a predetermined operation to a contact position where the writing chip comes into contact with the ink supply part from a front side.

To prevent ink from dripping, drying, and the like.

A writing utensil includes: a shaft tube; a writing chip that protrudes more toward the front than the shaft tube so as to discharge ink when pressed against a written face; and an ink supply part that supplies ink to the writing chip from a rear side, wherein the writing chip is at a separate position that is separated toward the front across a space with respect to the ink supply part and is moved due to a predetermined operation to a contact position where the writing chip comes into contact with the ink supply part from a front side.

A refill for a writing felt pen, the refill comprising a deformable pouch and a nib inserted into the deformable pouch, the deformable pouch comprising a mix of dry absorbent polymer, fibers and dry ink.

The present invention provides a liquid applicator, comprising: an applicating head, a buffer in communication with the outside air, a gas-liquid exchanger and a reservoir supplying a liquid to the gas-liquid exchanger. The gas-liquid exchanger has a wick, a liquid sealing tube covering on the outer peripheral wall of the wick, and a gas-liquid channel disposed between the wick and the liquid sealing tube; the buffer covers on the outer peripheral wall of the liquid sealing tube, and capillary pressure of the liquid sealing tube is greater than capillary pressure of the buffer by 30% or more. The liquid applicator of the invention can effectively control the release of a liquid and prevent the liquid from leaking out, and features a simple structure, smooth application and easy manufacturing.