MAC Fast Response Eye Cream is a caffeinated cream that produces instant effects. It makes skin around the eyes feel tighter and diminishes the appearance of fine lines and dark circles
. The positive aspects of this product are that it is fast-acting and effective in reducing puffiness and dark circles around the eyes. The negative aspects of this product are that it is relatively expensive compared to other eye creams and may not work for everyone. The ingredients of this product include caffeine, green tea extract, and a blend of botanicals
