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Slow resist (or Slow resistance) is an unofficial champion statistic that reduces the strength of . It can be obtained from champion abilities, items, and runes, and stacks multiplicatively. It applies to already active slows. It affects self-slows (e.g, , , ). It should not be confused with , which only reduces the duration of slows.

## Slow Immunity

Slow immunity is different from 100% slow resist as it prevents from being applied in the first place, and in most cases too.

### Champion abilities

• cleanses and provides immunity to slows and cripples for the buff's duration.
• (as )'s cleanses and provides immunity to slows and cripples for the buff's duration.
• provides immunity to to slows and cripples while active.
• cleanses and provides immunity to slows only while channeling.

### Statuses

• All spells that grant also prevent slows and cripples from being applied.

### Items

• all crowd control, then provides immunity to slows only for 2 seconds.

## Formulas

These formulas can calculate how much slow resist you have, based on your movement speed and on the slow applied to you.

• Slow Resist is the amount of slow resist you currently have.
• BaseMS is your base movement speed.
• BonusMS is the sum of all additive flat movement speed bonuses.
• MS Multiplier is the sum of all additive percent movement speed bonuses.
• Slow is the strongest slow currently applied on your champion.
• Slow Resist, MS Multiplier, and Slow are percentages (e.g. 50% is 0.5 in the formula).

Formula one:

$\pagecolor{black}\color{White} Movement\ Speed \leq 220:$ $\pagecolor{black}\color{White} Slow Resist = 1 - ({{1 - {{FinalMS - 110} \over {(BaseMS + BonusMS) \times (1 + MS Multiplier) \times 0.5}}}) \div {Slow}}$

Formula two:

$\pagecolor{black}\color{White} 220 \leq Movement\ Speed \leq 415:$ $\pagecolor{black}\color{White} Slow Resist = 1 - ({{1 - {{FinalMS} \over {(BaseMS + BonusMS) \times (1 + MS Multiplier)}}}) \div {Slow}}$

Formula three:

$\pagecolor{black}\color{White} 415 \leq Movement\ Speed \leq 490:$ $\pagecolor{black}\color{White} Slow Resist = 1 - ({{1 - {{{{FinalMS - 475} \over {0.5}} + 490} \over {(BaseMS + BonusMS) \times (1 + MS Multiplier)}}}) \div {Slow}}$

Formula four:

$\pagecolor{black}\color{White} Movement\ Speed \geq 490:$ $\pagecolor{black}\color{White} Slow Resist = 1 - ({{1 - {{{{FinalMS - 415} \over {0.8}} + 415} \over {(BaseMS + BonusMS) \times (1 + MS Multiplier)}}}) \div {Slow}}$

## Notes

Relevant mathematics
• A champion with , a movement speed of 400 and who is affected by a 40% will have a movement speed of 400 × (1 − (0.4 × 0.75)) = 280, which is equal to a 30% slow without slow resist.

Last updated: February 19, 2020, patch V10.4

• The biggest amount of  slow resist obtainable is 92.35% with .
1 - ((1 - ) × (1 - ) × (1 - ) × (1 - ) × (1 - )) = 92.35%

## Patch History

V10.4
• Now stacks multiplicatively instead of additively. Can no longer go above 100% slow resist, thus increasing movement speed with slows.