Spider Eye is a poisonous food and brewing item in Minecraft. It can be used to brew potions with negative effects, such as the Potion of Poison, and can also be fermented with sugar and a brown mushroom to create a Fermented Spider Eye, which is used to brew more advanced potions, such as the Potion of Weakness, Harming, Slowness, or Invisibility.
Regarding the ingredients or materials of Spider Eye, it is an item in Minecraft that can be obtained by killing spiders or cave spiders. To make a Fermented Spider Eye, you need one Spider Eye, one Brown Mushroom, and one Sugar.
As for the positive and negative aspects of Spider Eye, it has negative effects when eaten, such as restoring only a full nugget of hunger and applying a poison effect that lasts four seconds and causes two full hearts of damage. However, when used in brewing, it can create potions with negative effects that can be useful in combat or other situations.
It is worth noting that there is also a cosmetic product called Spider Gel, which is a type of nail gel. The safety assessment of this product shows that it may cause eye irritation if it comes into contact with the eyes.