Here are the details, positive and negative aspects, and ingredients or materials of some Essence eyeshadow products based on the search results:

Essence I Love Stage Eyeshadow Base

• Ingredients: Aqua (Water), Cyclopentasiloxane, Cyclohexasiloxane, Glycerin, Isododecane, etc.
• Positive: Helps eyeshadow last longer and prevents creasing
• Negative: None found

Essence FIRE Eyeshadow Palette

• Ingredients: Not available
• Positive: Features a highly pigmented mix of finishes from matte & satin to shimmery & metallic
• Negative: None found

Essence Soft Touch Eyeshadow

• Ingredients: Mica, Dimethicone, Magnesium Stearate, Silica, Trimethylsiloxysilicate, Disiloxane, Dimethicone/Vinyl Dimethicone Crosspolymer, Tocopheryl Acetate, etc.
• Positive: None found
• Negative: None found

Essence I Love Colour Intensifying Eyeshadow Base

• Ingredients: Aqua (Water), Cyclopentasiloxane, Cyclohexasiloxane, Glycerin, etc.
• Positive: Helps eyeshadow last longer and intensifies the color
• Negative: None found

Essence Welcome to London Eyeshadow Palette

• Ingredients: Not available
• Positive: Features 12 highly pigmented, matte & metallic shades
• Negative: None found

Essence Eyeshadow Palette, Salut Paris

• Ingredients: Not available
• Positive: Hypoallergenic and free of fragrance, gluten, coconut, nickel, preservatives, lanolin, and paraben
• Negative: None found

Note that some of the products do not have their ingredients listed, and no negative aspects were found for any of the products.