Key Characteristics of Aqua Cake Liner:

Water-Activated: You dampen a fine-tipped eyeliner brush (or an angled brush) with water, then swirl it into the solid product to create a creamy, paint-like consistency.

Intense Color Payoff: These liners are known for their vibrant, opaque color. The more product you pick up, the more intense the line will be.

Matte or Semi-Matte Finish: They typically dry down to a matte or semi-matte finish.

Long-Lasting (often smudge-proof): Once dry, many cake liners are quite smudge-proof and long-lasting. Some brands even offer a "sealer" to make them waterproof.

Versatile: Can be used to create sharp, precise lines, dramatic wings, or even graphic liner looks. Some artists also use them for body painting or to fill in brows (with careful application).

Easy to Remove: Despite being long-lasting, they are generally easy to remove with soap and water.