Skins grant your Saints unique appearances, which is awesome if you enjoy changing how they look. Equip cool skins for the Saints you like, and enjoy every second you spend in the cosmo.
How to Obtain Skins
You can buy skins by spending Skin Vouchers in the Mall - Skins. These can be obtained via events that are available for a limited time.
After acquiring a new skin, head to Growth Management, and select your Saint. Then open its info menu and find the Skin sub-tab. You can then choose which skin to equip by tapping on Equip.