Here are the details about blue eyeliners, including product information, positive and negative aspects, ingredients, and materials:

Product Information:

• K7L Blue Eyeliner: This is a waterproof, smudge-proof, and precise eyeliner. It has a dimension of 6.69 x 6.69 x 56.69 inches and weighs 0.04 ounces.

• TWLBXMG Blue Eyeliner Pencil Liquid: This is a waterproof, quick-drying, and long-lasting eyeliner with an ultra-fine tip. It comes in nine colors, including blue.

• Chella Dual Liquid Eyeliner Pen: This is a water-resistant, long-wearing eyeliner with a tapered brush. It comes in two shades with a rich pearl pigment that provides a luminous effect and is smudge-proof.

• SEPHORA COLLECTION Ultimate Gel Waterproof Eyeliner Pencil: This is a waterproof, long-lasting gel eyeliner that glides on effortlessly and provides intense color payoff in matte, metallic, and shimmer finishes.

Positive and Negative Aspects:

• K7L Blue Eyeliner: Customers have mixed reviews about this product. Some customers say that it is waterproof and has good longevity. However, some customers say that it is not very pigmented.

• TWLBXMG Blue Eyeliner Pencil Liquid: There are no positive or negative aspects mentioned in the search results.

• Chella Dual Liquid Eyeliner Pen: Customers have positive reviews about this product. They say that it glides on effortlessly and has a long-wearing formula that is smudge-proof.

• SEPHORA COLLECTION Ultimate Gel Waterproof Eyeliner Pencil: There are no positive or negative aspects mentioned in the search results.

Ingredients or Materials:

• Eyeliners contain the same basic kinds of ingredients, including film formers, thickeners, and pigments. Film formers deposit a thin layer on the skin, while thickeners help stabilize the formula so it will stick to the lids. Pigments include iron oxides to create blacks and browns, ultramarine for blue, chromium oxide for green, and titanium dioxide for white.

• Mineral Pencil Eyeliners are free from titanium dioxide, mica (for the matte shades), parabens, talc, gluten, and other toxic ingredients.

In summary, blue eyeliners come in different types, including waterproof, long-wearing, and gel eyeliners. Customers have mixed reviews about some products, while others have positive reviews. Eyeliners contain the same basic kinds of ingredients, including film formers, thickeners, and pigments. Mineral Pencil Eyeliners are free from toxic ingredients.