1. Flask of Crimson Tears (Red)
Primary Function: The Flask of Crimson Tears restores HP (Hit Points), which is critical for Elden Ring Items surviving the various dangers in the world, including enemy attacks, environmental hazards, and even falls.

Uses: This flask is your primary means of healing during exploration and boss fights. It can be used at any point during combat or while exploring, making it a life-saving item when you're low on health.

Upgrades: You can upgrade the Flask of Crimson Tears by collecting Sacred Tears, which can be found at specific Sites of Grace. This upgrade will increase the amount of HP restored by each flask use, allowing you to better withstand tougher enemies and bosses.

Tip: Keep an eye on your Flask of Crimson Tears usage, especially before major boss fights or challenging areas. Managing your healing effectively is crucial, as some areas have few opportunities to replenish flasks.

2. Flask of Cerulean Tears (Blue)
Primary Function: The Flask of Cerulean Tears restores FP (Focus Points), which is used for casting spells, activating weapon skills, and using certain special abilities. For magic users, this flask is crucial to sustain your offensive capabilities, while for those using weapon skills or special abilities, it’s just as important.

Uses: The Cerulean Flask is indispensable for players who rely on magic, incantations, or weapon arts. Whether you’re a sorcerer flinging spells or wielding a weapon with special abilities, this flask allows you to keep using your powers in battle.

Upgrades: Similar to the Crimson Flask, the Cerulean Flask can be upgraded using Sacred Tears to improve its efficacy. You can also find Golden Seeds to increase the number of uses for both flasks, making your resource management even more flexible.

Tip: For mixed builds that use both magic and melee, balancing your Cerulean and Crimson flasks is key. You might need to adjust their allocation at Sites of Grace depending on your current needs, such as prioritizing FP or best site to buy elden ring items health restoration based on the challenges ahead.