The Dahlia — Honkai Star Rail Character Guide

The Dahlia is a Fire Nihility Amplifier in Honkai: Star Rail, and this HSR build guide covers teams, relics, light cones, and investment priority. Best teams use Firefly, Boothill, Rappa; recommended relics are Iron Cavalry Against the Scourge with Forge of the Kalpagni Lantern; the top light cone is Never Forget Her Flame; the first investment target is E1; The Dahlia is strongest in Memory of Chaos (MoC T0).

Fire Nihility Amplifier · MoC T0 · PF T0.5 · AS T0

For account-specific results, use the HSR team builder, compare upgrades in Pull Advisor, optimize equipment in the Light Cone Advisor, or read the StarGuide methodology.

Overview

Break support who converts Toughness Reduction into Super Break DMG even on non-Broken enemies, eliminating the archetype's core ramp-up weakness. Provides 50% Weakness Break Efficiency, 18% DEF shred, Weakness Implant, and consistent SP recovery. Exclusively viable in Break teams.

Break support who deploys a Zone via Skill that converts all Toughness Reduction into Super Break DMG even on non-Broken enemies, eliminating the archetype's core ramp-up weakness. Manages a 130-Energy Ultimate cycle that applies Wilt (18% DEF shred + Weakness Implant of all Dance Partners' types) to all enemies. Talent designates a Dance Partner (highest Break Effect ally) and launches a 5-hit Follow-up ATK after the Dance Partner attacks, generating SP via A4 trace.

Key Mechanics

Zone from Skill is the core mechanic — it converts ALL Toughness Reduction into Super Break DMG on non-Broken enemies, including through Toughness-Locked enemies. This eliminates Break teams' ramp-up weakness entirely.
Dance Partner designation auto-selects the ally with highest Break Effect. The Dance Partner receives 60% Super Break conversion on Broken enemies from Talent, plus triggers The Dahlia's Follow-up ATK.
A6 trace is critical for Firefly synergy: Fire Weakness Implant from Enhanced Skill grants Firefly 30% SPD for 2 turns and 10% Max Energy per implant (with 240 Max Energy, that's 24 Energy per implant, capped at 120 total). Combined with Skill's 60% Energy restore, enables immediate Ultimate re-entry.
Wilt from Ultimate lasts 4 turns with 130 Energy cost — nearly permanent uptime on DEF shred and Weakness Implant. A6 Energy regeneration and Follow-up Energy (2 per trigger) help maintain this cycle.
SP positive through A4 (1 SP per 2 Follow-ups) and Basic ATK usage on non-Zone turns. Signature LC adds 1 SP per Ultimate from Weakness Implant. This SP generation is critical for enabling SP-hungry Break DPS at E0.

Best The Dahlia DPS Pairings

Firefly (S), Boothill (S), Rappa (S), Himeko (S), Sushang (S), Xueyi (S), March 7th • The Hunt (A)

The Dahlia Investment Priority

E1 — Extends the Talent Super Break multiplier to all allies (not just Dance Partner), and adds 25% fixed Toughness Reduction per enemy hit — drastically accelerates Break loops against high-Toughness bosses. Most impactful first purchase for Break enthusiasts.
LC S1 — Signature provides the extremely rare Break DMG Dealt buff (32%) and SP recovery on Weakness Implant. Substantial gap over alternatives due to unique buff type. Get after E1 for maximum performance.
E2 — Permanent 20% All-Type RES reduction for all enemies plus instant Wilt application on enemies entering the field — best stopping point for spenders who want to replace Ruan Mei in other teams.

The Dahlia Relics and Stat Targets

Recommended: Iron Cavalry Against the Scourge with Forge of the Kalpagni Lantern

Stat targets: Break Effect 200-250%+, SPD 160+, Effect Hit Rate 67%

Main stats: Body: HP% > Effect Hit Rate · Feet: SPD · Sphere: HP% / DEF% · Rope: Energy Regen > Break Effect

Best The Dahlia Light Cones

Never Forget Her Flame (Best in Slot): Signature LC providing 60% Break Effect and 32% Break DMG Dealt at S1 — a buff type almost exclusively found here. Break DMG Dealt multiplies all Break and Super Break damage multiplicatively. Recovers 1 SP per Ultimate cycle when implanting Weakness. Uniquely strong due to rarity of Break DMG Dealt; gap to alternatives is larger than most signatures.
Lies Dance on the Breeze: Cipher's signature works well here — provides 18% SPD (helps reach Speed breakpoints) and applies 24% DEF reduction to all enemies for 2 turns after attacking. Requires 170 SPD for the secondary Theft state. Does not provide Break Effect, so relic substats must compensate. Strong alternative when the signature is unavailable.
Long Road Leads Home: Provides 60% Break Effect and applies the Charring state on Weakness Break, increasing Break DMG taken by 18% for 2 turns (stackable twice). Requires 67% Effect Hit Rate to guarantee application. Useful when Fugue uses her own signature — the two LCs can coexist without conflict. Available from standard banner.
Resolution Shines As Pearls of Sweat: Reduces enemy DEF by 16% at S1 (20% at S5) for 1 turn when hitting an enemy not already Ensnared. Short duration requires frequent reapplication but Dahlia attacks often via Basic, Skill, and Follow-up ATK. Needs 67% Effect Hit Rate at S5 to guarantee. Good 4-star option available from gacha.

The Dahlia FAQ

Who works best with The Dahlia in HSR?

The Dahlia's best team options include Firefly, Boothill, Rappa. StarGuide rates teammates by role and composition fit so the recommendation reflects how the character is actually played.

What relics should The Dahlia use?

The Dahlia's recommended relic setup is Iron Cavalry Against the Scourge with Forge of the Kalpagni Lantern, with stat targets around Break Effect 200-250%+, SPD 160+, Effect Hit Rate 67%.

What is the best light cone for The Dahlia?

Never Forget Her Flame is the top listed light cone for The Dahlia. Signature LC providing 60% Break Effect and 32% Break DMG Dealt at S1 — a buff type almost exclusively found here. Break DMG Dealt multiplies all Break and Super Break damage multiplicatively. Recovers 1 SP per Ultimate cycle when implanting Weakness. Uniquely strong due to rarity of Break DMG Dealt; gap to alternatives is larger than most signatures.

How should I invest in The Dahlia?

The Dahlia's first listed investment priority is E1. Extends the Talent Super Break multiplier to all allies (not just Dance Partner), and adds 25% fixed Toughness Reduction per enemy hit — drastically accelerates Break loops against high-Toughness bosses. Most impactful first purchase for Break enthusiasts.

Important Notes

Zone duration is 3 turns decreasing at start of Dahlia's turn — must cast Skill consistently to avoid losing the pre-Break Super Break conversion window. Missing a Skill cast can cost an entire rotation's worth of damage.
Exclusively useful in Break teams. Zero kit value for Crit, Follow-up Attack, DoT, or Remembrance archetypes. Do not pull without an established Break DPS to support.
Needs 67%+ Effect Hit Rate to guarantee Wilt application on high-Effect RES enemies. Without sufficient EHR, DEF shred may fail, significantly reducing team damage output.
Signature LC is highly recommended due to the rarity of Break DMG Dealt as a buff type. The gap between signature and alternatives is larger than for most characters in this regard.