Non-sealing fluid-based writing instrument and non-drying writing fluid

A writing instrument comprising:

• a body;
• a fluid reservoir arranged within the body, the fluid reservoir containing a fluid;
• and
• a writing tip fluidly connected to the fluid reservoir;
• wherein the writing instrument is configured to actuate from a retracted position to an exposed position and to actuate from the exposed position to the retracted position;
• wherein the writing tip is concealed when the writing instrument is in the retracted position;
• wherein the writing tip is exposed when the writing instrument is in the exposed position;
• and
• wherein the fluid reservoir and the writing tip are always fluidly connected to an atmosphere or an exterior of the body.

A writing fluid for use in a writing instrument, the writing fluid comprising:

• a polyethylene glycol;
• and
• a color dye;
• wherein the polyethylene glycol comprises 20% or more by weight of the writing fluid.

A writing fluid for use in a writing instrument, the writing fluid comprising:

• a polyethylene glycol;
• and
• a color dye;
• further comprising glycols, glycerin, and polyglycols, and wherein the writing fluid does not contain ethylene glycol.

A writing instrument comprising:

• a body;
• a fluid reservoir arranged within the body, the fluid reservoir containing a fluid;
• and
• a writing tip fluidly connected to the fluid reservoir;
• wherein the writing instrument is configured to actuate from a retracted position to an exposed position and to actuate from the exposed position to the retracted position;
• wherein the writing tip is concealed when the writing instrument is in the retracted position;
• wherein the writing tip is exposed when the writing instrument is in the exposed position;
• wherein the fluid reservoir and the writing tip are not sealed from an atmosphere or an exterior of the body when the writing instrument is in the retracted position;
• and
• wherein the fluid reservoir and the writing tip are not sealed from the atmosphere or the exterior of the body when the writing instrument is in the exposed position,
• wherein the fluid is a writing fluid comprising:
• a polyethylene glycol;
• and
• a color dye.