The red waterline is a safety feature on ships that indicates the maximum safe loading level for the vessel. It is a painted line on the exterior of the ship's hull, typically located near the waterline, and is used to ensure that the ship is not overloaded, which could lead to instability and potential safety hazards. The red waterline is determined based on the ship's design and stability calculations, and it is important for the crew to monitor and maintain the vessel's loading to ensure it stays below this line. **

At the waterline, you will find the point where the water meets the hull of a ship or boat. This is the level at which the vessel sits in the water when it is properly loaded and balanced. The waterline is an important reference point for determining a vessel's stability and buoyancy, and it is used in calculations for naval architecture and ship design. **

The substance on your upper waterline is likely to be a buildup of oil, dirt, and dead skin cells. This buildup can cause irritation and discomfort, as well as potentially leading to infections if not properly cleaned. It is important to regularly clean this area with a gentle cleanser or makeup remover to prevent any issues and maintain good eye health. **

A kohl that is specifically designed for the waterline is ideal for this sensitive area. Look for a kohl pencil that is waterproof and long-lasting to ensure it stays in place throughout the day. Additionally, choose a formula that is gentle and safe for use on the waterline to avoid irritation or discomfort. Some popular options for waterline kohl pencils include Urban Decay 24/7 Glide-On Eye Pencil, Marc Jacobs Highliner Gel Eye Crayon, and L'Oreal Paris Infallible Pro-Last Waterproof Pencil Eyeliner. **

To remove eyeliner from the waterline, you can use a gentle makeup remover specifically designed for the eyes. Apply a small amount of the makeup remover onto a cotton swab or pad, and gently swipe it along the waterline to remove the eyeliner. Be careful not to tug or pull on the delicate skin around the eyes. After removing the eyeliner, you can follow up with a gentle cleanser to ensure all residue is removed. **

A good waterproof eyeliner for the waterline is the Urban Decay 24/7 Glide-On Eye Pencil. This eyeliner is known for its long-lasting and waterproof formula, making it ideal for the waterline. It also comes in a variety of shades, allowing you to create different looks while still having the confidence that it will stay put throughout the day. **

The yellow pimple on the lower waterline could be a sty or a chalazion. A sty is a red, painful lump near the edge of the eyelid that may look like a pimple. It is caused by an infection of the oil glands in the eyelid. A chalazion is a painless bump caused by a blocked oil gland in the eyelid. Both conditions can be treated with warm compresses and gentle eyelid hygiene, but it's best to consult with an eye doctor for proper diagnosis and treatment. **

Eyeliner stays on the lower waterline due to the natural oils and moisture in the eye area. These oils help to adhere the eyeliner to the waterline and prevent it from smudging or running. Additionally, some eyeliners are specifically formulated to be long-wearing and water-resistant, which helps them stay in place on the waterline. Finally, setting the eyeliner with a matching eyeshadow or a translucent powder can also help to lock it in place and prevent it from fading or smudging throughout the day. **