Cleanse

For all effects with crowd control removals, see Crowd control#Removal.

CleanseEdit
Removes all disables (excluding Airborne, Nearsight, and Suppression) and summoner spell debuffs (excluding Mark) affecting your champion, and grants you 75% tenacity for 3 seconds.
Cooldown	240 seconds
Range	Self
Breaks stealth	No
Summoner level	9
Availability
SR
HA
NB
AR
Cleanse in action

Cleanse is a self-targeted summoner spell that removes most crowd control effects and summoner spell debuffs.

Notes

• Cleanse will remove the following debuff types:
  • Crowd control:
    • Blind
    • Forced action
      • Berserk
      • Charm
      • Flee
      • Taunt
    • Cripple
    • Disarm
    • Drowsy & Sleep
    • Ground
    • Root
    • Silence
    • Slow
    • Stun ( Suspension)
      • Suspension's fake airborne is also removed when the stun is.
  • Summoner spells:
    • Ignite
      • Does not remove the Grievous Wounds debuff.
    • Exhaust
• Cleanse cannot be activated while under the effects of suppression or stasis (both disable all summoner spells from use).

Strategy

• Its primary function is to remove active crowd control effects, allowing the champion to continue pursuit or escape.

The cooldown of this spell can be reduced by summoner spell cooldown reduction.

Summoner spell haste

Summoner's Rift
Base cooldown ▶	360s ()	300s ()	240s ()	180s ()	90s ()	20s ()
▼  Haste
10 ()	327.27s	272.73s	218.18s	163.64s	81.82s	18.18s
18 ()	305.08s	254.24s	203.39s	152.54s	76.27s	16.95s
28 ( )	281.25s	234.38s	187.5s	140.63s	70.31s	15.63s
Howling Abyss
Base cooldown ▶		300s ()	240s ()	180s ()	80s ()	20s ()
▼  Haste
70 ()		176.47s	141.18s	105.88s	47.06s	11.76s
80 ()		166.67s	133.33s	100s	44.44s	11.11s
88 ()		159.57s	127.66s	95.74s	42.55s	10.64s
98 ()		151.52s	121.21s	90.91s	40.4s	10.1s

Trivia

• The tooltip previously stated that Cleanse was able to remove the sleep debuff, even before the first champion with this effect was introduced, which was Zoe.
• Cleanse was named Boost up until V0.9.22.15.
• Prior to V3.13, Ground Slam and Barrel Roll were the only attack speed slows in the game not connected to a movement speed slow and so were the only attack speed slows that Cleanse did not remove.
• The first icon for Cleanse was recolored for the icon for the Season 2011 mastery Willpower.

Media

• Videos
• Old Icons

Cleanse

Cleanse

Sound Effects

Activation

• ▶️   Summoner Spell SFX
• ▶️   Summoner Spell SFX

Patch History

V14.10

• Cooldown increased to 240 seconds from 210.
• Tenacity increased to 75% from 65%.

V13.15

• Bug Fix: Tenacity buff no longer lasts longer than intended.

V9.17

• Bug Fix: Now properly clears the stun from Viktor's Augment: Implosion.

V7.22

• Level requirement increased to 9 from 6.

V5.18

• Now removes Challenge / fixed a bug where Cleanse wasn't removing all Summoner Spell debuffs.

V4.1

• Icon updated.

V1.0.0.139

• Bug Fix: Fixed a bug where it could interrupt Teleport.

V1.0.0.129

• Now cleanses summoner spell debuffs such as Exhaust's movement speed and damage reduction and Ignite's damage over time.
• Cooldown increased to 210 seconds from 150 seconds.
• Improved Cleanse no longer reduces cooldown, but now extends the secondary disable reduction buff by 1 second.

V1.0.0.125

• Removed the word "sleeps" from tooltip.

V1.0.0.104

• Can now remove Exhaust.

V1.0.0.99

• Now removes silence and blind effects.

V1.0.0.97

• Can now be used without breaking stealth.

V1.0.0.96

• Now only removes crowd controlling effects, silences and blinds. It no longer removes effects such as damaging debuffs or armor/stat debuffs

V1.0.0.86

• Cooldown increased to 150 seconds from 120.

V1.0.0.72

• Can now remove Ignite.

V1.0.0.63 Remake

• No longer provides debuff immunity (but still removes debuffs when cast). Provides a 50% duration reduction to stuns, slows, taunts, fears, snares, sleeps and immobilizers for the next 3 seconds.
• Cooldown increased to 120 seconds from 100.
• Willpower (mastery): Cooldown reduction reduced to 20 seconds from 30.

V1.0.0.61

• Now provides 2 seconds of debuff immunity after cast.

V0.9.25.24

• Cooldown reduced to 100 seconds from 120.

V0.9.22.16

• Added the summoner spell particle.
• No longer stops Requiem.

V0.9.22.15 Remake

• Renamed to Cleanse from Boost
  • Removes all debuffs from your champion, can be cast while disabled.
  • Cooldown reduced to 120 seconds from 150.

V0.9.22.7

• Cooldown increased to 150 seconds from 120.
• Duration reduced to 12 seconds from 15.

July 10, 2009 Patch

• Duration reduced to 15 seconds from 30.

June 26, 2009 Patch

• Will Power (mastery): Increases the duration of Boost by 2 seconds, and reduces the cooldown by 30 seconds.
• Is no longer gets consumed by autoattack abilities like Frost Shot or Toxic Shot.

June 6, 2009 Patch

• Gave it the correct buff icon/tooltip.
• Can now be cast while disabled.

May 29, 2009 Patch

• Tooltip fixes.

May 23, 2009 Patch

• Now activates a 30 second duration spell shield (90 second cooldown), also removes any slows/silences/snares currently on the caster.

May 1, 2009 Patch

• Cooldown reduced to 90 seconds from 180.
• Known issue: it doesn't break stuns, fears, or silences.

Alpha Week 5

• Initial cooldown reduced to 0, and cooldown reduced to 180 seconds from 480.

Alpha Week 4

• Cooldown reduced to 360 seconds from 480.

Summoner spells