Tier 1: Moth
Active Skill. Grants 45 seconds of the "Moth" effect, which slowly heals you if you are standing next to a powered electric light source, such as the lamps in Hideouts. The healing rate is about the same as a bandage, and is just enough to heal two pips. (For reference, the Protagonist's healthbar starts out at 2 pips).
Pros: Unlike all other sources of healing in the game, Moth stacks with healing items. That means you can use Moth and a Bandage to heal twice as fast as Bandages alone for 45 seconds.
Cons: Like all active skills, it can only be used once per day, and the Protagonist can't use a different active skill until the full 45 seconds is over. The healing speed is only as good as Bandages, the first healing item in the game. Requires standing, which isn't the safest thing to do during combat. Healing is plentiful in the late game, rendering a 1/day heal mostly useless.
To Do: Does the Moth perk lose any effectiveness when combined with the Weak Regeneration perk?