Ascension Material

★★★★

Endotherm Chitin

Endotherm Chitin is a 4★ material in Honkai: Star Rail. See how to get it and which characters/light cones need it below.

4★Ascension Material

3Used to upgrade

2How to obtain

Endotherm Chitin is a material ★4 in Honkai: Star Rail. 3 characters need this item to level up. Obtainable from 2 different sources in-game.

Last updated: 30/07/2026

The figures on this page come directly from gamevika's internal game data store (counted/read straight from the real records), not an estimate or copy from elsewhere.

Description

Hot, translucent substance almost like fire in the solid state. Can be used for the Ascension of Fire characters.

Lore

Strange chitin peeled off from an interdimensional creature. Although not piping hot anymore, it still radiates warmth. "It's too cold outside. But with this gemstone on you, you'll be able to travel far and wide, even to search for cities with humans left..."

Farm it smart

A BOSS material. The biggest pain: weekly bosses cap rewards per week, so this is often the BOTTLENECK that traps a character at the 70→80 ascension. Only fight the boss dropping mats for the character you are ACTUALLY building — do not spread thin.

Material Planner →

How to obtain

Stagnant Shadow: Silvermane Guard Restricted Zone
Omni-Synthesizer — Material Exchange

Used to upgrade

3 characters / light cones need this material

×65

Himeko

×50

Asta

×50

Hook

Stats

Rarity	★★★★
Type	Ascension Material
Stack limit	99,999

Official names in every language

Tiếng Việt	Vỏ Tinh Thể Giữ Nhiệt
English	Endotherm Chitin
日本語	恒温晶殻
한국어	상온 갑각
繁體中文	恆溫晶殼
简体中文	恒温晶壳

Where to use it / Related tools

Material Planner →

Endotherm Chitin is an upgrade material — check the Material Planner to see how much you need for the character you're building.

Same-type items

Enigmatic Ectostella Broken Teeth of Iron Wolf Horn of Snow Lightning Crown of the Past Shadow Storm Eye Void Cast Iron Golden Crown of the Past Shadow Netherworld Token Searing Steel Blade Gelid Chitin Shape Shifter's Lightning Staff Ascendant Debris Nail of the Ape Suppressing Edict IPC Work Permit Raging Heart Dream Fridge Nail of the Beast Coffin A Glass of the Besotted Era Dream Flamer Chordal Mirage Invasive Clot Radiant Prominence Sea Siren's Torn Fin Thunder Strum Charred Bud of Twilight Darkveil Moonlight Harbinger of Strife Sneering Harlequin

← All items Material Planner →

FAQ

What is Endotherm Chitin?

Hot, translucent substance almost like fire in the solid state. Can be used for the Ascension of Fire characters.

Where do you get Endotherm Chitin?

Sources for Endotherm Chitin: Stagnant Shadow: Silvermane Guard Restricted Zone · Omni-Synthesizer — Material Exchange. See the “How to obtain” section above for details on each source.

What type of item is Endotherm Chitin?

Endotherm Chitin is a 4★ material in Honkai: Star Rail, in the “Ascension Material” category.

What is Endotherm Chitin used for?

Endotherm Chitin is used by 3 characters.

Understand the mechanics behind this 4

Trailblaze Power guide: best ways to spend it, Fuel, Jade refreshes, and your daily farming route→ Efficient Material Farming in Honkai: Star Rail: Calyx, Stagnant Shadow, Echo of War, and a Weekly Route→ Assignments Guide: Who to Send Where for Max Passive Materials and Credits→ How to Farm Credits in Honkai: Star Rail (Never Go Broke Leveling Traces & Relics)→