PoE2
Withering Touch
Support
Chaos, Duration
Requires: Level 1
Support Reqirements: +5 Int
Supports skills, giving them a chance to Wither enemies on Hit.
Withered last 4 seconds
Supported Skills deal 30% less Damage
Supported Skills have 25% chance to inflict Withered on Hit with Chaos Damage
Place into a Skill's Support Gem socket in the Skills menu to apply its effects to that Skill. You cannot have multiple copies of the same Support Gem socketed at the same time.
PoE1
Withering Touch Support
Chaos
Physical, Attack, Support, Duration
Level: (1–20)
Cost & Reservation Multiplier: 130%
Requires: Level (38–70), (63–111) Dex
Supports attack skills.
Supported Skills have 25% chance to inflict Withered on Hit
Withered lasts 2 seconds
Supported Skills gain (10–29)% of Physical Damage as Extra Chaos Damage

Additional Effects From Quality:
Supported Skills deal (0–10)% increased Chaos Damage
This is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Skill Gem you wish to augment. Right click to remove from a socket.